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Finding the Fourth Proportional to 72,483.80, 108,756.98 and 39,227.32

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Solution

The fourth proportional to 72,483.80, 108,756.98 and 39,227.32 is: 58,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.80 : 108,756.98 = 39,227.32 : x
  2. Step 2: Convert to fraction form
    72,483.80/108,756.98 = 39,227.32/x
  3. Step 3: Cross multiply
    72,483.80x = 108,756.98 × 39,227.32
  4. Step 4: Simplify right side
    72,483.80x = 4,266,244,943.61
  5. Step 5: Solve for x
    x = 4,266,244,943.61/72,483.80
  6. Step 6: Final answer
    x = 58,857.91

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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.