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Finding the Fourth Proportional to 60,515.60, 90,773.40 and 53,128.40

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Solution

The fourth proportional to 60,515.60, 90,773.40 and 53,128.40 is: 79,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,515.60 : 90,773.40 = 53,128.40 : x
  2. Step 2: Convert to fraction form
    60,515.60/90,773.40 = 53,128.40/x
  3. Step 3: Cross multiply
    60,515.60x = 90,773.40 × 53,128.40
  4. Step 4: Simplify right side
    60,515.60x = 4,822,645,504.56
  5. Step 5: Solve for x
    x = 4,822,645,504.56/60,515.60
  6. Step 6: Final answer
    x = 79,692.60

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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.