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Finding the Fourth Proportional to 42,003.80, 62,932.80 and 39,379.40

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Solution

The fourth proportional to 42,003.80, 62,932.80 and 39,379.40 is: 59,000.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,003.80 : 62,932.80 = 39,379.40 : x
  2. Step 2: Convert to fraction form
    42,003.80/62,932.80 = 39,379.40/x
  3. Step 3: Cross multiply
    42,003.80x = 62,932.80 × 39,379.40
  4. Step 4: Simplify right side
    42,003.80x = 2,478,255,904.32
  5. Step 5: Solve for x
    x = 2,478,255,904.32/42,003.80
  6. Step 6: Final answer
    x = 59,000.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.