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Finding the Fourth Proportional to 65,080.76, 89,812.28 and 38,223.80

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Solution

The fourth proportional to 65,080.76, 89,812.28 and 38,223.80 is: 52,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,080.76 : 89,812.28 = 38,223.80 : x
  2. Step 2: Convert to fraction form
    65,080.76/89,812.28 = 38,223.80/x
  3. Step 3: Cross multiply
    65,080.76x = 89,812.28 × 38,223.80
  4. Step 4: Simplify right side
    65,080.76x = 3,432,965,988.08
  5. Step 5: Solve for x
    x = 3,432,965,988.08/65,080.76
  6. Step 6: Final answer
    x = 52,749.32

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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.