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Finding the Fourth Proportional to 71,485.71, 107,229.32 and 21,566.23

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Solution

The fourth proportional to 71,485.71, 107,229.32 and 21,566.23 is: 32,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,485.71 : 107,229.32 = 21,566.23 : x
  2. Step 2: Convert to fraction form
    71,485.71/107,229.32 = 21,566.23/x
  3. Step 3: Cross multiply
    71,485.71x = 107,229.32 × 21,566.23
  4. Step 4: Simplify right side
    71,485.71x = 2,312,532,177.86
  5. Step 5: Solve for x
    x = 2,312,532,177.86/71,485.71
  6. Step 6: Final answer
    x = 32,349.57

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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.