Home / 78,986.68-118,377.96-59,109.28

Finding the Fourth Proportional to 78,986.68, 118,377.96 and 59,109.28

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Solution

The fourth proportional to 78,986.68, 118,377.96 and 59,109.28 is: 88,587.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986.68 : 118,377.96 = 59,109.28 : x
  2. Step 2: Convert to fraction form
    78,986.68/118,377.96 = 59,109.28/x
  3. Step 3: Cross multiply
    78,986.68x = 118,377.96 × 59,109.28
  4. Step 4: Simplify right side
    78,986.68x = 6,997,235,983.47
  5. Step 5: Solve for x
    x = 6,997,235,983.47/78,986.68
  6. Step 6: Final answer
    x = 88,587.54

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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.