Home / 78,829.30-118,049.55-52,390.90

Finding the Fourth Proportional to 78,829.30, 118,049.55 and 52,390.90

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Solution

The fourth proportional to 78,829.30, 118,049.55 and 52,390.90 is: 78,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.30 : 118,049.55 = 52,390.90 : x
  2. Step 2: Convert to fraction form
    78,829.30/118,049.55 = 52,390.90/x
  3. Step 3: Cross multiply
    78,829.30x = 118,049.55 × 52,390.90
  4. Step 4: Simplify right side
    78,829.30x = 6,184,722,169.10
  5. Step 5: Solve for x
    x = 6,184,722,169.10/78,829.30
  6. Step 6: Final answer
    x = 78,457.15

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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.