Home / 78,856.91-118,284.75-19,692.18

Finding the Fourth Proportional to 78,856.91, 118,284.75 and 19,692.18

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Solution

The fourth proportional to 78,856.91, 118,284.75 and 19,692.18 is: 29,538.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,856.91 : 118,284.75 = 19,692.18 : x
  2. Step 2: Convert to fraction form
    78,856.91/118,284.75 = 19,692.18/x
  3. Step 3: Cross multiply
    78,856.91x = 118,284.75 × 19,692.18
  4. Step 4: Simplify right side
    78,856.91x = 2,329,284,588.26
  5. Step 5: Solve for x
    x = 2,329,284,588.26/78,856.91
  6. Step 6: Final answer
    x = 29,538.12

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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.