Home / 77,720,988-107,255,481.97-42,439,038.10

Finding the Fourth Proportional to 77,720,988, 107,255,481.97 and 42,439,038.10

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Solution

The fourth proportional to 77,720,988, 107,255,481.97 and 42,439,038.10 is: 58,566,155.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,720,988 : 107,255,481.97 = 42,439,038.10 : x
  2. Step 2: Convert to fraction form
    77,720,988/107,255,481.97 = 42,439,038.10/x
  3. Step 3: Cross multiply
    77,720,988x = 107,255,481.97 × 42,439,038.10
  4. Step 4: Simplify right side
    77,720,988x = 4,551,819,485,758,693
  5. Step 5: Solve for x
    x = 4,551,819,485,758,693/77,720,988
  6. Step 6: Final answer
    x = 58,566,155.72

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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.