Home / 78,335.19-108,102.78-42,525.22

Finding the Fourth Proportional to 78,335.19, 108,102.78 and 42,525.22

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Solution

The fourth proportional to 78,335.19, 108,102.78 and 42,525.22 is: 58,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,335.19 : 108,102.78 = 42,525.22 : x
  2. Step 2: Convert to fraction form
    78,335.19/108,102.78 = 42,525.22/x
  3. Step 3: Cross multiply
    78,335.19x = 108,102.78 × 42,525.22
  4. Step 4: Simplify right side
    78,335.19x = 4,597,094,502.11
  5. Step 5: Solve for x
    x = 4,597,094,502.11/78,335.19
  6. Step 6: Final answer
    x = 58,684.92

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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.