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Finding the Fourth Proportional to 71,857.59, 99,166.53 and 40,026.50

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Solution

The fourth proportional to 71,857.59, 99,166.53 and 40,026.50 is: 55,238.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,857.59 : 99,166.53 = 40,026.50 : x
  2. Step 2: Convert to fraction form
    71,857.59/99,166.53 = 40,026.50/x
  3. Step 3: Cross multiply
    71,857.59x = 99,166.53 × 40,026.50
  4. Step 4: Simplify right side
    71,857.59x = 3,969,289,139.19
  5. Step 5: Solve for x
    x = 3,969,289,139.19/71,857.59
  6. Step 6: Final answer
    x = 55,238.28

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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.