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Finding the Fourth Proportional to 66,703.32, 92,035.08 and 39,854.52

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Solution

The fourth proportional to 66,703.32, 92,035.08 and 39,854.52 is: 54,989.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,703.32 : 92,035.08 = 39,854.52 : x
  2. Step 2: Convert to fraction form
    66,703.32/92,035.08 = 39,854.52/x
  3. Step 3: Cross multiply
    66,703.32x = 92,035.08 × 39,854.52
  4. Step 4: Simplify right side
    66,703.32x = 3,668,013,936.56
  5. Step 5: Solve for x
    x = 3,668,013,936.56/66,703.32
  6. Step 6: Final answer
    x = 54,989.98

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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.