Home / 72,132.42-99,543.24-40,302.66

Finding the Fourth Proportional to 72,132.42, 99,543.24 and 40,302.66

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Solution

The fourth proportional to 72,132.42, 99,543.24 and 40,302.66 is: 55,617.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.42 : 99,543.24 = 40,302.66 : x
  2. Step 2: Convert to fraction form
    72,132.42/99,543.24 = 40,302.66/x
  3. Step 3: Cross multiply
    72,132.42x = 99,543.24 × 40,302.66
  4. Step 4: Simplify right side
    72,132.42x = 4,011,857,357.02
  5. Step 5: Solve for x
    x = 4,011,857,357.02/72,132.42
  6. Step 6: Final answer
    x = 55,617.95

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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.