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Finding the Fourth Proportional to 60,341.20, 90,511.80 and 57,781.60

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Solution

The fourth proportional to 60,341.20, 90,511.80 and 57,781.60 is: 86,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,341.20 : 90,511.80 = 57,781.60 : x
  2. Step 2: Convert to fraction form
    60,341.20/90,511.80 = 57,781.60/x
  3. Step 3: Cross multiply
    60,341.20x = 90,511.80 × 57,781.60
  4. Step 4: Simplify right side
    60,341.20x = 5,229,916,622.88
  5. Step 5: Solve for x
    x = 5,229,916,622.88/60,341.20
  6. Step 6: Final answer
    x = 86,672.40

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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.