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Finding the Fourth Proportional to 29,139.48, 40,225.50 and 22,422.60

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Solution

The fourth proportional to 29,139.48, 40,225.50 and 22,422.60 is: 30,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.48 : 40,225.50 = 22,422.60 : x
  2. Step 2: Convert to fraction form
    29,139.48/40,225.50 = 22,422.60/x
  3. Step 3: Cross multiply
    29,139.48x = 40,225.50 × 22,422.60
  4. Step 4: Simplify right side
    29,139.48x = 901,960,296.30
  5. Step 5: Solve for x
    x = 901,960,296.30/29,139.48
  6. Step 6: Final answer
    x = 30,953.20

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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.