Home / 78,502.77-117,758.75-28,588.14

Finding the Fourth Proportional to 78,502.77, 117,758.75 and 28,588.14

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Solution

The fourth proportional to 78,502.77, 117,758.75 and 28,588.14 is: 42,883.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,502.77 : 117,758.75 = 28,588.14 : x
  2. Step 2: Convert to fraction form
    78,502.77/117,758.75 = 28,588.14/x
  3. Step 3: Cross multiply
    78,502.77x = 117,758.75 × 28,588.14
  4. Step 4: Simplify right side
    78,502.77x = 3,366,503,488.28
  5. Step 5: Solve for x
    x = 3,366,503,488.28/78,502.77
  6. Step 6: Final answer
    x = 42,883.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.