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Finding the Fourth Proportional to 72,423.76, 99,944.47 and 40,592.66

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Solution

The fourth proportional to 72,423.76, 99,944.47 and 40,592.66 is: 56,017.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,423.76 : 99,944.47 = 40,592.66 : x
  2. Step 2: Convert to fraction form
    72,423.76/99,944.47 = 40,592.66/x
  3. Step 3: Cross multiply
    72,423.76x = 99,944.47 × 40,592.66
  4. Step 4: Simplify right side
    72,423.76x = 4,057,011,186.90
  5. Step 5: Solve for x
    x = 4,057,011,186.90/72,423.76
  6. Step 6: Final answer
    x = 56,017.69

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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.