Home / 78,384.09-108,187.11-48,195.29

Finding the Fourth Proportional to 78,384.09, 108,187.11 and 48,195.29

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Solution

The fourth proportional to 78,384.09, 108,187.11 and 48,195.29 is: 66,519.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,384.09 : 108,187.11 = 48,195.29 : x
  2. Step 2: Convert to fraction form
    78,384.09/108,187.11 = 48,195.29/x
  3. Step 3: Cross multiply
    78,384.09x = 108,187.11 × 48,195.29
  4. Step 4: Simplify right side
    78,384.09x = 5,214,109,140.71
  5. Step 5: Solve for x
    x = 5,214,109,140.71/78,384.09
  6. Step 6: Final answer
    x = 66,519.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.