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Finding the Fourth Proportional to 60,355.80, 90,630.90 and 45,581.40

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Solution

The fourth proportional to 60,355.80, 90,630.90 and 45,581.40 is: 68,445.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,355.80 : 90,630.90 = 45,581.40 : x
  2. Step 2: Convert to fraction form
    60,355.80/90,630.90 = 45,581.40/x
  3. Step 3: Cross multiply
    60,355.80x = 90,630.90 × 45,581.40
  4. Step 4: Simplify right side
    60,355.80x = 4,131,083,305.26
  5. Step 5: Solve for x
    x = 4,131,083,305.26/60,355.80
  6. Step 6: Final answer
    x = 68,445.51

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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.