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Finding the Fourth Proportional to 60,986.76, 91,480.14 and 40,205.40

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Solution

The fourth proportional to 60,986.76, 91,480.14 and 40,205.40 is: 60,308.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,986.76 : 91,480.14 = 40,205.40 : x
  2. Step 2: Convert to fraction form
    60,986.76/91,480.14 = 40,205.40/x
  3. Step 3: Cross multiply
    60,986.76x = 91,480.14 × 40,205.40
  4. Step 4: Simplify right side
    60,986.76x = 3,677,995,620.76
  5. Step 5: Solve for x
    x = 3,677,995,620.76/60,986.76
  6. Step 6: Final answer
    x = 60,308.10

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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.