Home / 78,826.30-118,045.05-52,387.90

Finding the Fourth Proportional to 78,826.30, 118,045.05 and 52,387.90

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Solution

The fourth proportional to 78,826.30, 118,045.05 and 52,387.90 is: 78,452.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826.30 : 118,045.05 = 52,387.90 : x
  2. Step 2: Convert to fraction form
    78,826.30/118,045.05 = 52,387.90/x
  3. Step 3: Cross multiply
    78,826.30x = 118,045.05 × 52,387.90
  4. Step 4: Simplify right side
    78,826.30x = 6,184,132,274.90
  5. Step 5: Solve for x
    x = 6,184,132,274.90/78,826.30
  6. Step 6: Final answer
    x = 78,452.65

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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.