Home / 78,187.16-107,898.47-42,377.13

Finding the Fourth Proportional to 78,187.16, 107,898.47 and 42,377.13

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Solution

The fourth proportional to 78,187.16, 107,898.47 and 42,377.13 is: 58,480.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,187.16 : 107,898.47 = 42,377.13 : x
  2. Step 2: Convert to fraction form
    78,187.16/107,898.47 = 42,377.13/x
  3. Step 3: Cross multiply
    78,187.16x = 107,898.47 × 42,377.13
  4. Step 4: Simplify right side
    78,187.16x = 4,572,427,278.11
  5. Step 5: Solve for x
    x = 4,572,427,278.11/78,187.16
  6. Step 6: Final answer
    x = 58,480.54

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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.