Home / 71,863.09-99,164.62-40,031.30

Finding the Fourth Proportional to 71,863.09, 99,164.62 and 40,031.30

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Solution

The fourth proportional to 71,863.09, 99,164.62 and 40,031.30 is: 55,239.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,863.09 : 99,164.62 = 40,031.30 : x
  2. Step 2: Convert to fraction form
    71,863.09/99,164.62 = 40,031.30/x
  3. Step 3: Cross multiply
    71,863.09x = 99,164.62 × 40,031.30
  4. Step 4: Simplify right side
    71,863.09x = 3,969,688,652.61
  5. Step 5: Solve for x
    x = 3,969,688,652.61/71,863.09
  6. Step 6: Final answer
    x = 55,239.60

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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.