Home / 56,115-77,440.32-30,966.12

Finding the Fourth Proportional to 56,115, 77,440.32 and 30,966.12

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Solution

The fourth proportional to 56,115, 77,440.32 and 30,966.12 is: 42,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,115 : 77,440.32 = 30,966.12 : x
  2. Step 2: Convert to fraction form
    56,115/77,440.32 = 30,966.12/x
  3. Step 3: Cross multiply
    56,115x = 77,440.32 × 30,966.12
  4. Step 4: Simplify right side
    56,115x = 2,398,026,241.96
  5. Step 5: Solve for x
    x = 2,398,026,241.96/56,115
  6. Step 6: Final answer
    x = 42,734.14

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Double scale
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1.5x scale

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.