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Finding the Fourth Proportional to 45,324, 67,937.40 and 21,898.80

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Solution

The fourth proportional to 45,324, 67,937.40 and 21,898.80 is: 32,824.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,324 : 67,937.40 = 21,898.80 : x
  2. Step 2: Convert to fraction form
    45,324/67,937.40 = 21,898.80/x
  3. Step 3: Cross multiply
    45,324x = 67,937.40 × 21,898.80
  4. Step 4: Simplify right side
    45,324x = 1,487,747,535.12
  5. Step 5: Solve for x
    x = 1,487,747,535.12/45,324
  6. Step 6: Final answer
    x = 32,824.72

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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.