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Finding the Fourth Proportional to 61,421, 92,127.84 and 36,134.72

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Solution

The fourth proportional to 61,421, 92,127.84 and 36,134.72 is: 54,199.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,421 : 92,127.84 = 36,134.72 : x
  2. Step 2: Convert to fraction form
    61,421/92,127.84 = 36,134.72/x
  3. Step 3: Cross multiply
    61,421x = 92,127.84 × 36,134.72
  4. Step 4: Simplify right side
    61,421x = 3,329,013,702.60
  5. Step 5: Solve for x
    x = 3,329,013,702.60/61,421
  6. Step 6: Final answer
    x = 54,199.93

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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.