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Finding the Fourth Proportional to 92,280.60, 138,354.48 and 54,751.68

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Solution

The fourth proportional to 92,280.60, 138,354.48 and 54,751.68 is: 82,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,280.60 : 138,354.48 = 54,751.68 : x
  2. Step 2: Convert to fraction form
    92,280.60/138,354.48 = 54,751.68/x
  3. Step 3: Cross multiply
    92,280.60x = 138,354.48 × 54,751.68
  4. Step 4: Simplify right side
    92,280.60x = 7,575,140,215.53
  5. Step 5: Solve for x
    x = 7,575,140,215.53/92,280.60
  6. Step 6: Final answer
    x = 82,088.11

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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.