Home / 82,705.20-124,122.60-38,337.45

Finding the Fourth Proportional to 82,705.20, 124,122.60 and 38,337.45

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Solution

The fourth proportional to 82,705.20, 124,122.60 and 38,337.45 is: 57,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,705.20 : 124,122.60 = 38,337.45 : x
  2. Step 2: Convert to fraction form
    82,705.20/124,122.60 = 38,337.45/x
  3. Step 3: Cross multiply
    82,705.20x = 124,122.60 × 38,337.45
  4. Step 4: Simplify right side
    82,705.20x = 4,758,543,971.37
  5. Step 5: Solve for x
    x = 4,758,543,971.37/82,705.20
  6. Step 6: Final answer
    x = 57,536.21

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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.