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Finding the Fourth Proportional to 71,225.28, 98,287.02 and 39,392.28

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Solution

The fourth proportional to 71,225.28, 98,287.02 and 39,392.28 is: 54,359.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,225.28 : 98,287.02 = 39,392.28 : x
  2. Step 2: Convert to fraction form
    71,225.28/98,287.02 = 39,392.28/x
  3. Step 3: Cross multiply
    71,225.28x = 98,287.02 × 39,392.28
  4. Step 4: Simplify right side
    71,225.28x = 3,871,749,812.21
  5. Step 5: Solve for x
    x = 3,871,749,812.21/71,225.28
  6. Step 6: Final answer
    x = 54,359.21

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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.