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Finding the Fourth Proportional to 60,307.60, 90,469.66 and 20,854.12

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Solution

The fourth proportional to 60,307.60, 90,469.66 and 20,854.12 is: 31,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,307.60 : 90,469.66 = 20,854.12 : x
  2. Step 2: Convert to fraction form
    60,307.60/90,469.66 = 20,854.12/x
  3. Step 3: Cross multiply
    60,307.60x = 90,469.66 × 20,854.12
  4. Step 4: Simplify right side
    60,307.60x = 1,886,665,146.00
  5. Step 5: Solve for x
    x = 1,886,665,146.00/60,307.60
  6. Step 6: Final answer
    x = 31,284.04

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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.