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Finding the Fourth Proportional to 61,440.80, 92,160.59 and 28,151.42

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Solution

The fourth proportional to 61,440.80, 92,160.59 and 28,151.42 is: 42,226.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,440.80 : 92,160.59 = 28,151.42 : x
  2. Step 2: Convert to fraction form
    61,440.80/92,160.59 = 28,151.42/x
  3. Step 3: Cross multiply
    61,440.80x = 92,160.59 × 28,151.42
  4. Step 4: Simplify right side
    61,440.80x = 2,594,450,874.98
  5. Step 5: Solve for x
    x = 2,594,450,874.98/61,440.80
  6. Step 6: Final answer
    x = 42,226.84

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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.