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Finding the Fourth Proportional to 42,962.86, 64,431.78 and 14,881.78

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Solution

The fourth proportional to 42,962.86, 64,431.78 and 14,881.78 is: 22,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,962.86 : 64,431.78 = 14,881.78 : x
  2. Step 2: Convert to fraction form
    42,962.86/64,431.78 = 14,881.78/x
  3. Step 3: Cross multiply
    42,962.86x = 64,431.78 × 14,881.78
  4. Step 4: Simplify right side
    42,962.86x = 958,859,574.97
  5. Step 5: Solve for x
    x = 958,859,574.97/42,962.86
  6. Step 6: Final answer
    x = 22,318.34

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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.