Home / 78,822,189,002.72-108,773,754,860.32-42,692,322,568.16

Finding the Fourth Proportional to 78,822,189,002.72, 108,773,754,860.32 and 42,692,322,568.16

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Solution

The fourth proportional to 78,822,189,002.72, 108,773,754,860.32 and 42,692,322,568.16 is: 58,914,936,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,822,189,002.72 : 108,773,754,860.32 = 42,692,322,568.16 : x
  2. Step 2: Convert to fraction form
    78,822,189,002.72/108,773,754,860.32 = 42,692,322,568.16/x
  3. Step 3: Cross multiply
    78,822,189,002.72x = 108,773,754,860.32 × 42,692,322,568.16
  4. Step 4: Simplify right side
    78,822,189,002.72x = 4,643,804,229,446,743,883,776
  5. Step 5: Solve for x
    x = 4,643,804,229,446,743,883,776/78,822,189,002.72
  6. Step 6: Final answer
    x = 58,914,936,113.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.