Home / 79,521.12-119,280.47-20,356.29

Finding the Fourth Proportional to 79,521.12, 119,280.47 and 20,356.29

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Solution

The fourth proportional to 79,521.12, 119,280.47 and 20,356.29 is: 30,534.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.12 : 119,280.47 = 20,356.29 : x
  2. Step 2: Convert to fraction form
    79,521.12/119,280.47 = 20,356.29/x
  3. Step 3: Cross multiply
    79,521.12x = 119,280.47 × 20,356.29
  4. Step 4: Simplify right side
    79,521.12x = 2,428,107,736.87
  5. Step 5: Solve for x
    x = 2,428,107,736.87/79,521.12
  6. Step 6: Final answer
    x = 30,534.12

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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.