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Finding the Fourth Proportional to 85,668.01, 128,417.24 and 40,610.22

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Solution

The fourth proportional to 85,668.01, 128,417.24 and 40,610.22 is: 60,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.01 : 128,417.24 = 40,610.22 : x
  2. Step 2: Convert to fraction form
    85,668.01/128,417.24 = 40,610.22/x
  3. Step 3: Cross multiply
    85,668.01x = 128,417.24 × 40,610.22
  4. Step 4: Simplify right side
    85,668.01x = 5,215,052,951.28
  5. Step 5: Solve for x
    x = 5,215,052,951.28/85,668.01
  6. Step 6: Final answer
    x = 60,875.15

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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.