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Finding the Fourth Proportional to 45,062.59, 67,609.95 and 20,100.40

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Solution

The fourth proportional to 45,062.59, 67,609.95 and 20,100.40 is: 30,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,062.59 : 67,609.95 = 20,100.40 : x
  2. Step 2: Convert to fraction form
    45,062.59/67,609.95 = 20,100.40/x
  3. Step 3: Cross multiply
    45,062.59x = 67,609.95 × 20,100.40
  4. Step 4: Simplify right side
    45,062.59x = 1,358,987,038.98
  5. Step 5: Solve for x
    x = 1,358,987,038.98/45,062.59
  6. Step 6: Final answer
    x = 30,157.77

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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.