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Finding the Fourth Proportional to 45,191.98, 67,699.76 and 21,465.78

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Solution

The fourth proportional to 45,191.98, 67,699.76 and 21,465.78 is: 32,156.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,191.98 : 67,699.76 = 21,465.78 : x
  2. Step 2: Convert to fraction form
    45,191.98/67,699.76 = 21,465.78/x
  3. Step 3: Cross multiply
    45,191.98x = 67,699.76 × 21,465.78
  4. Step 4: Simplify right side
    45,191.98x = 1,453,228,154.21
  5. Step 5: Solve for x
    x = 1,453,228,154.21/45,191.98
  6. Step 6: Final answer
    x = 32,156.77

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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.