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Finding the Fourth Proportional to 60,204.74, 90,307.05 and 20,758.74

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Solution

The fourth proportional to 60,204.74, 90,307.05 and 20,758.74 is: 31,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,204.74 : 90,307.05 = 20,758.74 : x
  2. Step 2: Convert to fraction form
    60,204.74/90,307.05 = 20,758.74/x
  3. Step 3: Cross multiply
    60,204.74x = 90,307.05 × 20,758.74
  4. Step 4: Simplify right side
    60,204.74x = 1,874,660,571.12
  5. Step 5: Solve for x
    x = 1,874,660,571.12/60,204.74
  6. Step 6: Final answer
    x = 31,138.09

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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.