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Finding the Fourth Proportional to 60,978.96, 91,468.45 and 40,197.60

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Solution

The fourth proportional to 60,978.96, 91,468.45 and 40,197.60 is: 60,296.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,978.96 : 91,468.45 = 40,197.60 : x
  2. Step 2: Convert to fraction form
    60,978.96/91,468.45 = 40,197.60/x
  3. Step 3: Cross multiply
    60,978.96x = 91,468.45 × 40,197.60
  4. Step 4: Simplify right side
    60,978.96x = 3,676,812,247.11
  5. Step 5: Solve for x
    x = 3,676,812,247.11/60,978.96
  6. Step 6: Final answer
    x = 60,296.41

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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.