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Finding the Fourth Proportional to 86,810.28, 119,790.95 and 80,463.12

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Solution

The fourth proportional to 86,810.28, 119,790.95 and 80,463.12 is: 111,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,810.28 : 119,790.95 = 80,463.12 : x
  2. Step 2: Convert to fraction form
    86,810.28/119,790.95 = 80,463.12/x
  3. Step 3: Cross multiply
    86,810.28x = 119,790.95 × 80,463.12
  4. Step 4: Simplify right side
    86,810.28x = 9,638,753,182.45
  5. Step 5: Solve for x
    x = 9,638,753,182.45/86,810.28
  6. Step 6: Final answer
    x = 111,032.39

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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.