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Finding the Fourth Proportional to 52,861.92, 79,291.35 and 21,262.20

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Solution

The fourth proportional to 52,861.92, 79,291.35 and 21,262.20 is: 31,892.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,861.92 : 79,291.35 = 21,262.20 : x
  2. Step 2: Convert to fraction form
    52,861.92/79,291.35 = 21,262.20/x
  3. Step 3: Cross multiply
    52,861.92x = 79,291.35 × 21,262.20
  4. Step 4: Simplify right side
    52,861.92x = 1,685,908,541.97
  5. Step 5: Solve for x
    x = 1,685,908,541.97/52,861.92
  6. Step 6: Final answer
    x = 31,892.68

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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.