Home / 71,203.23-106,810.50-21,279.69

Finding the Fourth Proportional to 71,203.23, 106,810.50 and 21,279.69

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Solution

The fourth proportional to 71,203.23, 106,810.50 and 21,279.69 is: 31,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,203.23 : 106,810.50 = 21,279.69 : x
  2. Step 2: Convert to fraction form
    71,203.23/106,810.50 = 21,279.69/x
  3. Step 3: Cross multiply
    71,203.23x = 106,810.50 × 21,279.69
  4. Step 4: Simplify right side
    71,203.23x = 2,272,894,328.75
  5. Step 5: Solve for x
    x = 2,272,894,328.75/71,203.23
  6. Step 6: Final answer
    x = 31,921.23

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1.5x scale

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.