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Finding the Fourth Proportional to 86,937.88, 119,965.98 and 69,076.12

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Solution

The fourth proportional to 86,937.88, 119,965.98 and 69,076.12 is: 95,318.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,937.88 : 119,965.98 = 69,076.12 : x
  2. Step 2: Convert to fraction form
    86,937.88/119,965.98 = 69,076.12/x
  3. Step 3: Cross multiply
    86,937.88x = 119,965.98 × 69,076.12
  4. Step 4: Simplify right side
    86,937.88x = 8,286,784,430.40
  5. Step 5: Solve for x
    x = 8,286,784,430.40/86,937.88
  6. Step 6: Final answer
    x = 95,318.46

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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.