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Finding the Fourth Proportional to 78,559.92, 108,414.99 and 42,752.25

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Solution

The fourth proportional to 78,559.92, 108,414.99 and 42,752.25 is: 58,999.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,559.92 : 108,414.99 = 42,752.25 : x
  2. Step 2: Convert to fraction form
    78,559.92/108,414.99 = 42,752.25/x
  3. Step 3: Cross multiply
    78,559.92x = 108,414.99 × 42,752.25
  4. Step 4: Simplify right side
    78,559.92x = 4,634,984,756.23
  5. Step 5: Solve for x
    x = 4,634,984,756.23/78,559.92
  6. Step 6: Final answer
    x = 58,999.36

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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.