Home / 78,867.13-108,838.29-43,058.65

Finding the Fourth Proportional to 78,867.13, 108,838.29 and 43,058.65

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Solution

The fourth proportional to 78,867.13, 108,838.29 and 43,058.65 is: 59,421.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,867.13 : 108,838.29 = 43,058.65 : x
  2. Step 2: Convert to fraction form
    78,867.13/108,838.29 = 43,058.65/x
  3. Step 3: Cross multiply
    78,867.13x = 108,838.29 × 43,058.65
  4. Step 4: Simplify right side
    78,867.13x = 4,686,429,835.71
  5. Step 5: Solve for x
    x = 4,686,429,835.71/78,867.13
  6. Step 6: Final answer
    x = 59,421.84

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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.