Home / 78,450,759.06-108,265,534.65-65,376,114.90

Finding the Fourth Proportional to 78,450,759.06, 108,265,534.65 and 65,376,114.90

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Solution

The fourth proportional to 78,450,759.06, 108,265,534.65 and 65,376,114.90 is: 90,221,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,450,759.06 : 108,265,534.65 = 65,376,114.90 : x
  2. Step 2: Convert to fraction form
    78,450,759.06/108,265,534.65 = 65,376,114.90/x
  3. Step 3: Cross multiply
    78,450,759.06x = 108,265,534.65 × 65,376,114.90
  4. Step 4: Simplify right side
    78,450,759.06x = 7,077,980,032,988,332
  5. Step 5: Solve for x
    x = 7,077,980,032,988,332/78,450,759.06
  6. Step 6: Final answer
    x = 90,221,944.54

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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.