Home / 81,492.24-122,320.80-42,077.52

Finding the Fourth Proportional to 81,492.24, 122,320.80 and 42,077.52

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Solution

The fourth proportional to 81,492.24, 122,320.80 and 42,077.52 is: 63,158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,492.24 : 122,320.80 = 42,077.52 : x
  2. Step 2: Convert to fraction form
    81,492.24/122,320.80 = 42,077.52/x
  3. Step 3: Cross multiply
    81,492.24x = 122,320.80 × 42,077.52
  4. Step 4: Simplify right side
    81,492.24x = 5,146,955,908.42
  5. Step 5: Solve for x
    x = 5,146,955,908.42/81,492.24
  6. Step 6: Final answer
    x = 63,158.85

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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.