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Finding the Fourth Proportional to 42,812.52, 64,223.10 and 14,728.80

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Solution

The fourth proportional to 42,812.52, 64,223.10 and 14,728.80 is: 22,094.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,812.52 : 64,223.10 = 14,728.80 : x
  2. Step 2: Convert to fraction form
    42,812.52/64,223.10 = 14,728.80/x
  3. Step 3: Cross multiply
    42,812.52x = 64,223.10 × 14,728.80
  4. Step 4: Simplify right side
    42,812.52x = 945,929,195.28
  5. Step 5: Solve for x
    x = 945,929,195.28/42,812.52
  6. Step 6: Final answer
    x = 22,094.69

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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.