Home / 81,267.52-121,857.45-36,870.05

Finding the Fourth Proportional to 81,267.52, 121,857.45 and 36,870.05

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Solution

The fourth proportional to 81,267.52, 121,857.45 and 36,870.05 is: 55,285.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,267.52 : 121,857.45 = 36,870.05 : x
  2. Step 2: Convert to fraction form
    81,267.52/121,857.45 = 36,870.05/x
  3. Step 3: Cross multiply
    81,267.52x = 121,857.45 × 36,870.05
  4. Step 4: Simplify right side
    81,267.52x = 4,492,890,182.20
  5. Step 5: Solve for x
    x = 4,492,890,182.20/81,267.52
  6. Step 6: Final answer
    x = 55,285.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.