Home / 78,187.17-107,898.44-42,377.07

Finding the Fourth Proportional to 78,187.17, 107,898.44 and 42,377.07

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Solution

The fourth proportional to 78,187.17, 107,898.44 and 42,377.07 is: 58,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,187.17 : 107,898.44 = 42,377.07 : x
  2. Step 2: Convert to fraction form
    78,187.17/107,898.44 = 42,377.07/x
  3. Step 3: Cross multiply
    78,187.17x = 107,898.44 × 42,377.07
  4. Step 4: Simplify right side
    78,187.17x = 4,572,419,532.89
  5. Step 5: Solve for x
    x = 4,572,419,532.89/78,187.17
  6. Step 6: Final answer
    x = 58,480.43

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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.