Home / 78,479.04-108,301.89-42,669.87

Finding the Fourth Proportional to 78,479.04, 108,301.89 and 42,669.87

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Solution

The fourth proportional to 78,479.04, 108,301.89 and 42,669.87 is: 58,884.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479.04 : 108,301.89 = 42,669.87 : x
  2. Step 2: Convert to fraction form
    78,479.04/108,301.89 = 42,669.87/x
  3. Step 3: Cross multiply
    78,479.04x = 108,301.89 × 42,669.87
  4. Step 4: Simplify right side
    78,479.04x = 4,621,227,567.05
  5. Step 5: Solve for x
    x = 4,621,227,567.05/78,479.04
  6. Step 6: Final answer
    x = 58,884.86

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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.