Home / 79,618.12-119,428.80-20,454.10

Finding the Fourth Proportional to 79,618.12, 119,428.80 and 20,454.10

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Solution

The fourth proportional to 79,618.12, 119,428.80 and 20,454.10 is: 30,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,618.12 : 119,428.80 = 20,454.10 : x
  2. Step 2: Convert to fraction form
    79,618.12/119,428.80 = 20,454.10/x
  3. Step 3: Cross multiply
    79,618.12x = 119,428.80 × 20,454.10
  4. Step 4: Simplify right side
    79,618.12x = 2,442,808,618.08
  5. Step 5: Solve for x
    x = 2,442,808,618.08/79,618.12
  6. Step 6: Final answer
    x = 30,681.57

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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.