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Finding the Fourth Proportional to 83,415.93, 115,103.46 and 66,463.13

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Solution

The fourth proportional to 83,415.93, 115,103.46 and 66,463.13 is: 91,710.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,415.93 : 115,103.46 = 66,463.13 : x
  2. Step 2: Convert to fraction form
    83,415.93/115,103.46 = 66,463.13/x
  3. Step 3: Cross multiply
    83,415.93x = 115,103.46 × 66,463.13
  4. Step 4: Simplify right side
    83,415.93x = 7,650,136,225.43
  5. Step 5: Solve for x
    x = 7,650,136,225.43/83,415.93
  6. Step 6: Final answer
    x = 91,710.73

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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.