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Finding the Fourth Proportional to 71,835.52, 99,123.04 and 40,000.16

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Solution

The fourth proportional to 71,835.52, 99,123.04 and 40,000.16 is: 55,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,835.52 : 99,123.04 = 40,000.16 : x
  2. Step 2: Convert to fraction form
    71,835.52/99,123.04 = 40,000.16/x
  3. Step 3: Cross multiply
    71,835.52x = 99,123.04 × 40,000.16
  4. Step 4: Simplify right side
    71,835.52x = 3,964,937,459.69
  5. Step 5: Solve for x
    x = 3,964,937,459.69/71,835.52
  6. Step 6: Final answer
    x = 55,194.66

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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.