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Finding the Fourth Proportional to 84,598.55, 126,893.15 and 28,432.86

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Solution

The fourth proportional to 84,598.55, 126,893.15 and 28,432.86 is: 42,647.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,598.55 : 126,893.15 = 28,432.86 : x
  2. Step 2: Convert to fraction form
    84,598.55/126,893.15 = 28,432.86/x
  3. Step 3: Cross multiply
    84,598.55x = 126,893.15 × 28,432.86
  4. Step 4: Simplify right side
    84,598.55x = 3,607,934,922.76
  5. Step 5: Solve for x
    x = 3,607,934,922.76/84,598.55
  6. Step 6: Final answer
    x = 42,647.72

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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.