Home / 78,836.40-118,254.60-49,311.90

Finding the Fourth Proportional to 78,836.40, 118,254.60 and 49,311.90

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Solution

The fourth proportional to 78,836.40, 118,254.60 and 49,311.90 is: 73,967.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,836.40 : 118,254.60 = 49,311.90 : x
  2. Step 2: Convert to fraction form
    78,836.40/118,254.60 = 49,311.90/x
  3. Step 3: Cross multiply
    78,836.40x = 118,254.60 × 49,311.90
  4. Step 4: Simplify right side
    78,836.40x = 5,831,359,009.74
  5. Step 5: Solve for x
    x = 5,831,359,009.74/78,836.40
  6. Step 6: Final answer
    x = 73,967.85

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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.