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Finding the Fourth Proportional to 40,130.40, 60,217.20 and 17,947.20

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Solution

The fourth proportional to 40,130.40, 60,217.20 and 17,947.20 is: 26,930.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,130.40 : 60,217.20 = 17,947.20 : x
  2. Step 2: Convert to fraction form
    40,130.40/60,217.20 = 17,947.20/x
  3. Step 3: Cross multiply
    40,130.40x = 60,217.20 × 17,947.20
  4. Step 4: Simplify right side
    40,130.40x = 1,080,730,131.84
  5. Step 5: Solve for x
    x = 1,080,730,131.84/40,130.40
  6. Step 6: Final answer
    x = 26,930.46

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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.