Home / 71,036.72-106,545.60-21,115.88

Finding the Fourth Proportional to 71,036.72, 106,545.60 and 21,115.88

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Solution

The fourth proportional to 71,036.72, 106,545.60 and 21,115.88 is: 31,671.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,036.72 : 106,545.60 = 21,115.88 : x
  2. Step 2: Convert to fraction form
    71,036.72/106,545.60 = 21,115.88/x
  3. Step 3: Cross multiply
    71,036.72x = 106,545.60 × 21,115.88
  4. Step 4: Simplify right side
    71,036.72x = 2,249,804,104.13
  5. Step 5: Solve for x
    x = 2,249,804,104.13/71,036.72
  6. Step 6: Final answer
    x = 31,671.00

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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.