Home / 81,012.04-121,595.90-39,488.20

Finding the Fourth Proportional to 81,012.04, 121,595.90 and 39,488.20

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Solution

The fourth proportional to 81,012.04, 121,595.90 and 39,488.20 is: 59,270.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,012.04 : 121,595.90 = 39,488.20 : x
  2. Step 2: Convert to fraction form
    81,012.04/121,595.90 = 39,488.20/x
  3. Step 3: Cross multiply
    81,012.04x = 121,595.90 × 39,488.20
  4. Step 4: Simplify right side
    81,012.04x = 4,801,603,218.38
  5. Step 5: Solve for x
    x = 4,801,603,218.38/81,012.04
  6. Step 6: Final answer
    x = 59,270.24

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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.