Home / 82,478.04-123,715.96-20,149.08

Finding the Fourth Proportional to 82,478.04, 123,715.96 and 20,149.08

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Solution

The fourth proportional to 82,478.04, 123,715.96 and 20,149.08 is: 30,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,478.04 : 123,715.96 = 20,149.08 : x
  2. Step 2: Convert to fraction form
    82,478.04/123,715.96 = 20,149.08/x
  3. Step 3: Cross multiply
    82,478.04x = 123,715.96 × 20,149.08
  4. Step 4: Simplify right side
    82,478.04x = 2,492,762,775.32
  5. Step 5: Solve for x
    x = 2,492,762,775.32/82,478.04
  6. Step 6: Final answer
    x = 30,223.35

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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.