Home / 78,864.13-108,834.15-43,055.65

Finding the Fourth Proportional to 78,864.13, 108,834.15 and 43,055.65

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Solution

The fourth proportional to 78,864.13, 108,834.15 and 43,055.65 is: 59,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.13 : 108,834.15 = 43,055.65 : x
  2. Step 2: Convert to fraction form
    78,864.13/108,834.15 = 43,055.65/x
  3. Step 3: Cross multiply
    78,864.13x = 108,834.15 × 43,055.65
  4. Step 4: Simplify right side
    78,864.13x = 4,685,925,367.95
  5. Step 5: Solve for x
    x = 4,685,925,367.95/78,864.13
  6. Step 6: Final answer
    x = 59,417.70

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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.