Home / 78,187.50-107,898.14-42,376.59

Finding the Fourth Proportional to 78,187.50, 107,898.14 and 42,376.59

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Solution

The fourth proportional to 78,187.50, 107,898.14 and 42,376.59 is: 58,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,187.50 : 107,898.14 = 42,376.59 : x
  2. Step 2: Convert to fraction form
    78,187.50/107,898.14 = 42,376.59/x
  3. Step 3: Cross multiply
    78,187.50x = 107,898.14 × 42,376.59
  4. Step 4: Simplify right side
    78,187.50x = 4,572,355,028.66
  5. Step 5: Solve for x
    x = 4,572,355,028.66/78,187.50
  6. Step 6: Final answer
    x = 58,479.36

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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.