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Finding the Fourth Proportional to 60,264.75, 90,279.45 and 28,629.78

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Solution

The fourth proportional to 60,264.75, 90,279.45 and 28,629.78 is: 42,888.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,264.75 : 90,279.45 = 28,629.78 : x
  2. Step 2: Convert to fraction form
    60,264.75/90,279.45 = 28,629.78/x
  3. Step 3: Cross multiply
    60,264.75x = 90,279.45 × 28,629.78
  4. Step 4: Simplify right side
    60,264.75x = 2,584,680,792.02
  5. Step 5: Solve for x
    x = 2,584,680,792.02/60,264.75
  6. Step 6: Final answer
    x = 42,888.77

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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.