Home / 71,062.18-106,574.70-21,128.83

Finding the Fourth Proportional to 71,062.18, 106,574.70 and 21,128.83

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Solution

The fourth proportional to 71,062.18, 106,574.70 and 21,128.83 is: 31,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.18 : 106,574.70 = 21,128.83 : x
  2. Step 2: Convert to fraction form
    71,062.18/106,574.70 = 21,128.83/x
  3. Step 3: Cross multiply
    71,062.18x = 106,574.70 × 21,128.83
  4. Step 4: Simplify right side
    71,062.18x = 2,251,798,718.60
  5. Step 5: Solve for x
    x = 2,251,798,718.60/71,062.18
  6. Step 6: Final answer
    x = 31,687.72

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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.