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Finding the Fourth Proportional to 72,304.32, 99,775.04 and 40,472.96

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Solution

The fourth proportional to 72,304.32, 99,775.04 and 40,472.96 is: 55,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,304.32 : 99,775.04 = 40,472.96 : x
  2. Step 2: Convert to fraction form
    72,304.32/99,775.04 = 40,472.96/x
  3. Step 3: Cross multiply
    72,304.32x = 99,775.04 × 40,472.96
  4. Step 4: Simplify right side
    72,304.32x = 4,038,191,202.92
  5. Step 5: Solve for x
    x = 4,038,191,202.92/72,304.32
  6. Step 6: Final answer
    x = 55,849.93

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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.