Home / 82,317.04-123,475.56-19,987.12

Finding the Fourth Proportional to 82,317.04, 123,475.56 and 19,987.12

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Solution

The fourth proportional to 82,317.04, 123,475.56 and 19,987.12 is: 29,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,317.04 : 123,475.56 = 19,987.12 : x
  2. Step 2: Convert to fraction form
    82,317.04/123,475.56 = 19,987.12/x
  3. Step 3: Cross multiply
    82,317.04x = 123,475.56 × 19,987.12
  4. Step 4: Simplify right side
    82,317.04x = 2,467,920,834.79
  5. Step 5: Solve for x
    x = 2,467,920,834.79/82,317.04
  6. Step 6: Final answer
    x = 29,980.68

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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.