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Finding the Fourth Proportional to 61,445.80, 92,168.70 and 54,228.70

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Solution

The fourth proportional to 61,445.80, 92,168.70 and 54,228.70 is: 81,343.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,445.80 : 92,168.70 = 54,228.70 : x
  2. Step 2: Convert to fraction form
    61,445.80/92,168.70 = 54,228.70/x
  3. Step 3: Cross multiply
    61,445.80x = 92,168.70 × 54,228.70
  4. Step 4: Simplify right side
    61,445.80x = 4,998,188,781.69
  5. Step 5: Solve for x
    x = 4,998,188,781.69/61,445.80
  6. Step 6: Final answer
    x = 81,343.05

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1.5x scale

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.