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Finding the Fourth Proportional to 40,587, 60,872.40 and 14,292.78

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Solution

The fourth proportional to 40,587, 60,872.40 and 14,292.78 is: 21,436.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,587 : 60,872.40 = 14,292.78 : x
  2. Step 2: Convert to fraction form
    40,587/60,872.40 = 14,292.78/x
  3. Step 3: Cross multiply
    40,587x = 60,872.40 × 14,292.78
  4. Step 4: Simplify right side
    40,587x = 870,035,821.27
  5. Step 5: Solve for x
    x = 870,035,821.27/40,587
  6. Step 6: Final answer
    x = 21,436.32

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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.