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Finding the Fourth Proportional to 71,520.67, 107,351.63 and 53,689.33

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Solution

The fourth proportional to 71,520.67, 107,351.63 and 53,689.33 is: 80,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,520.67 : 107,351.63 = 53,689.33 : x
  2. Step 2: Convert to fraction form
    71,520.67/107,351.63 = 53,689.33/x
  3. Step 3: Cross multiply
    71,520.67x = 107,351.63 × 53,689.33
  4. Step 4: Simplify right side
    71,520.67x = 5,763,637,156.19
  5. Step 5: Solve for x
    x = 5,763,637,156.19/71,520.67
  6. Step 6: Final answer
    x = 80,587.01

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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.