Home / 71,988.60-99,344.19-40,157.49

Finding the Fourth Proportional to 71,988.60, 99,344.19 and 40,157.49

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Solution

The fourth proportional to 71,988.60, 99,344.19 and 40,157.49 is: 55,417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,988.60 : 99,344.19 = 40,157.49 : x
  2. Step 2: Convert to fraction form
    71,988.60/99,344.19 = 40,157.49/x
  3. Step 3: Cross multiply
    71,988.60x = 99,344.19 × 40,157.49
  4. Step 4: Simplify right side
    71,988.60x = 3,989,413,316.48
  5. Step 5: Solve for x
    x = 3,989,413,316.48/71,988.60
  6. Step 6: Final answer
    x = 55,417.29

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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.