Home / 78,864.40-118,296.60-47,760.40

Finding the Fourth Proportional to 78,864.40, 118,296.60 and 47,760.40

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Solution

The fourth proportional to 78,864.40, 118,296.60 and 47,760.40 is: 71,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.40 : 118,296.60 = 47,760.40 : x
  2. Step 2: Convert to fraction form
    78,864.40/118,296.60 = 47,760.40/x
  3. Step 3: Cross multiply
    78,864.40x = 118,296.60 × 47,760.40
  4. Step 4: Simplify right side
    78,864.40x = 5,649,892,934.64
  5. Step 5: Solve for x
    x = 5,649,892,934.64/78,864.40
  6. Step 6: Final answer
    x = 71,640.60

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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.