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Finding the Fourth Proportional to 79,448.58, 119,172.87 and 20,282.13

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Solution

The fourth proportional to 79,448.58, 119,172.87 and 20,282.13 is: 30,423.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,448.58 : 119,172.87 = 20,282.13 : x
  2. Step 2: Convert to fraction form
    79,448.58/119,172.87 = 20,282.13/x
  3. Step 3: Cross multiply
    79,448.58x = 119,172.87 × 20,282.13
  4. Step 4: Simplify right side
    79,448.58x = 2,417,079,641.81
  5. Step 5: Solve for x
    x = 2,417,079,641.81/79,448.58
  6. Step 6: Final answer
    x = 30,423.20

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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.