Home / 40,890.55-61,337.85-21,207.55

Finding the Fourth Proportional to 40,890.55, 61,337.85 and 21,207.55

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Solution

The fourth proportional to 40,890.55, 61,337.85 and 21,207.55 is: 31,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,890.55 : 61,337.85 = 21,207.55 : x
  2. Step 2: Convert to fraction form
    40,890.55/61,337.85 = 21,207.55/x
  3. Step 3: Cross multiply
    40,890.55x = 61,337.85 × 21,207.55
  4. Step 4: Simplify right side
    40,890.55x = 1,300,825,520.77
  5. Step 5: Solve for x
    x = 1,300,825,520.77/40,890.55
  6. Step 6: Final answer
    x = 31,812.38

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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.