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Finding the Fourth Proportional to 45,295.84, 67,931.60 and 13,697.76

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Solution

The fourth proportional to 45,295.84, 67,931.60 and 13,697.76 is: 20,542.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,295.84 : 67,931.60 = 13,697.76 : x
  2. Step 2: Convert to fraction form
    45,295.84/67,931.60 = 13,697.76/x
  3. Step 3: Cross multiply
    45,295.84x = 67,931.60 × 13,697.76
  4. Step 4: Simplify right side
    45,295.84x = 930,510,753.22
  5. Step 5: Solve for x
    x = 930,510,753.22/45,295.84
  6. Step 6: Final answer
    x = 20,542.96

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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.