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Finding the Fourth Proportional to 71,570.70, 107,356.05 and 45,305.10

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Solution

The fourth proportional to 71,570.70, 107,356.05 and 45,305.10 is: 67,957.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.70 : 107,356.05 = 45,305.10 : x
  2. Step 2: Convert to fraction form
    71,570.70/107,356.05 = 45,305.10/x
  3. Step 3: Cross multiply
    71,570.70x = 107,356.05 × 45,305.10
  4. Step 4: Simplify right side
    71,570.70x = 4,863,776,580.86
  5. Step 5: Solve for x
    x = 4,863,776,580.86/71,570.70
  6. Step 6: Final answer
    x = 67,957.65

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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.