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Finding the Fourth Proportional to 65,710.80, 90,680.92 and 35,496.12

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Solution

The fourth proportional to 65,710.80, 90,680.92 and 35,496.12 is: 48,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,710.80 : 90,680.92 = 35,496.12 : x
  2. Step 2: Convert to fraction form
    65,710.80/90,680.92 = 35,496.12/x
  3. Step 3: Cross multiply
    65,710.80x = 90,680.92 × 35,496.12
  4. Step 4: Simplify right side
    65,710.80x = 3,218,820,818.03
  5. Step 5: Solve for x
    x = 3,218,820,818.03/65,710.80
  6. Step 6: Final answer
    x = 48,984.65

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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.