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Finding the Fourth Proportional to 71,057.67, 98,051.25 and 42,378.90

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Solution

The fourth proportional to 71,057.67, 98,051.25 and 42,378.90 is: 58,477.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,057.67 : 98,051.25 = 42,378.90 : x
  2. Step 2: Convert to fraction form
    71,057.67/98,051.25 = 42,378.90/x
  3. Step 3: Cross multiply
    71,057.67x = 98,051.25 × 42,378.90
  4. Step 4: Simplify right side
    71,057.67x = 4,155,304,118.63
  5. Step 5: Solve for x
    x = 4,155,304,118.63/71,057.67
  6. Step 6: Final answer
    x = 58,477.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.