Home / 52,561.16-78,861.90-21,422.60

Finding the Fourth Proportional to 52,561.16, 78,861.90 and 21,422.60

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Solution

The fourth proportional to 52,561.16, 78,861.90 and 21,422.60 is: 32,142.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,561.16 : 78,861.90 = 21,422.60 : x
  2. Step 2: Convert to fraction form
    52,561.16/78,861.90 = 21,422.60/x
  3. Step 3: Cross multiply
    52,561.16x = 78,861.90 × 21,422.60
  4. Step 4: Simplify right side
    52,561.16x = 1,689,426,938.94
  5. Step 5: Solve for x
    x = 1,689,426,938.94/52,561.16
  6. Step 6: Final answer
    x = 32,142.12

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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.