Home / 66,909.49-100,332.45-38,838.21

Finding the Fourth Proportional to 66,909.49, 100,332.45 and 38,838.21

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Solution

The fourth proportional to 66,909.49, 100,332.45 and 38,838.21 is: 58,238.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,909.49 : 100,332.45 = 38,838.21 : x
  2. Step 2: Convert to fraction form
    66,909.49/100,332.45 = 38,838.21/x
  3. Step 3: Cross multiply
    66,909.49x = 100,332.45 × 38,838.21
  4. Step 4: Simplify right side
    66,909.49x = 3,896,732,261.25
  5. Step 5: Solve for x
    x = 3,896,732,261.25/66,909.49
  6. Step 6: Final answer
    x = 58,238.86

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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.