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Finding the Fourth Proportional to 42,412.78, 63,619.20 and 14,710.78

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Solution

The fourth proportional to 42,412.78, 63,619.20 and 14,710.78 is: 22,066.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,412.78 : 63,619.20 = 14,710.78 : x
  2. Step 2: Convert to fraction form
    42,412.78/63,619.20 = 14,710.78/x
  3. Step 3: Cross multiply
    42,412.78x = 63,619.20 × 14,710.78
  4. Step 4: Simplify right side
    42,412.78x = 935,888,054.98
  5. Step 5: Solve for x
    x = 935,888,054.98/42,412.78
  6. Step 6: Final answer
    x = 22,066.18

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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.