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Finding the Fourth Proportional to 72,176.74, 108,263.93 and 21,575.89

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Solution

The fourth proportional to 72,176.74, 108,263.93 and 21,575.89 is: 32,363.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,176.74 : 108,263.93 = 21,575.89 : x
  2. Step 2: Convert to fraction form
    72,176.74/108,263.93 = 21,575.89/x
  3. Step 3: Cross multiply
    72,176.74x = 108,263.93 × 21,575.89
  4. Step 4: Simplify right side
    72,176.74x = 2,335,890,266.11
  5. Step 5: Solve for x
    x = 2,335,890,266.11/72,176.74
  6. Step 6: Final answer
    x = 32,363.48

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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.