Home / 81,045.38-121,541.82-26,995.70

Finding the Fourth Proportional to 81,045.38, 121,541.82 and 26,995.70

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Solution

The fourth proportional to 81,045.38, 121,541.82 and 26,995.70 is: 40,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.38 : 121,541.82 = 26,995.70 : x
  2. Step 2: Convert to fraction form
    81,045.38/121,541.82 = 26,995.70/x
  3. Step 3: Cross multiply
    81,045.38x = 121,541.82 × 26,995.70
  4. Step 4: Simplify right side
    81,045.38x = 3,281,106,510.17
  5. Step 5: Solve for x
    x = 3,281,106,510.17/81,045.38
  6. Step 6: Final answer
    x = 40,484.81

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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.