Home / 60,540.10-90,700.80-49,386.40

Finding the Fourth Proportional to 60,540.10, 90,700.80 and 49,386.40

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Solution

The fourth proportional to 60,540.10, 90,700.80 and 49,386.40 is: 73,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,540.10 : 90,700.80 = 49,386.40 : x
  2. Step 2: Convert to fraction form
    60,540.10/90,700.80 = 49,386.40/x
  3. Step 3: Cross multiply
    60,540.10x = 90,700.80 × 49,386.40
  4. Step 4: Simplify right side
    60,540.10x = 4,479,385,989.12
  5. Step 5: Solve for x
    x = 4,479,385,989.12/60,540.10
  6. Step 6: Final answer
    x = 73,990.40

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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.