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Finding the Fourth Proportional to 65,450.80, 98,176.20 and 60,639.40

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Solution

The fourth proportional to 65,450.80, 98,176.20 and 60,639.40 is: 90,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,450.80 : 98,176.20 = 60,639.40 : x
  2. Step 2: Convert to fraction form
    65,450.80/98,176.20 = 60,639.40/x
  3. Step 3: Cross multiply
    65,450.80x = 98,176.20 × 60,639.40
  4. Step 4: Simplify right side
    65,450.80x = 5,953,345,862.28
  5. Step 5: Solve for x
    x = 5,953,345,862.28/65,450.80
  6. Step 6: Final answer
    x = 90,959.10

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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.