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Finding the Fourth Proportional to 65,710.86, 90,680.89 and 35,496.17

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Solution

The fourth proportional to 65,710.86, 90,680.89 and 35,496.17 is: 48,984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,710.86 : 90,680.89 = 35,496.17 : x
  2. Step 2: Convert to fraction form
    65,710.86/90,680.89 = 35,496.17/x
  3. Step 3: Cross multiply
    65,710.86x = 90,680.89 × 35,496.17
  4. Step 4: Simplify right side
    65,710.86x = 3,218,824,151.66
  5. Step 5: Solve for x
    x = 3,218,824,151.66/65,710.86
  6. Step 6: Final answer
    x = 48,984.66

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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.