Home / 66,639.04-99,909.18-40,337.56

Finding the Fourth Proportional to 66,639.04, 99,909.18 and 40,337.56

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Solution

The fourth proportional to 66,639.04, 99,909.18 and 40,337.56 is: 60,476.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.04 : 99,909.18 = 40,337.56 : x
  2. Step 2: Convert to fraction form
    66,639.04/99,909.18 = 40,337.56/x
  3. Step 3: Cross multiply
    66,639.04x = 99,909.18 × 40,337.56
  4. Step 4: Simplify right side
    66,639.04x = 4,030,092,542.80
  5. Step 5: Solve for x
    x = 4,030,092,542.80/66,639.04
  6. Step 6: Final answer
    x = 60,476.45

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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.