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Finding the Fourth Proportional to 60,307.52, 90,361.58 and 20,842.70

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Solution

The fourth proportional to 60,307.52, 90,361.58 and 20,842.70 is: 31,229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,307.52 : 90,361.58 = 20,842.70 : x
  2. Step 2: Convert to fraction form
    60,307.52/90,361.58 = 20,842.70/x
  3. Step 3: Cross multiply
    60,307.52x = 90,361.58 × 20,842.70
  4. Step 4: Simplify right side
    60,307.52x = 1,883,378,747.44
  5. Step 5: Solve for x
    x = 1,883,378,747.44/60,307.52
  6. Step 6: Final answer
    x = 31,229.59

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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.