Home / 84,128,078.40-126,192,117.60-47,722,401.60

Finding the Fourth Proportional to 84,128,078.40, 126,192,117.60 and 47,722,401.60

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Solution

The fourth proportional to 84,128,078.40, 126,192,117.60 and 47,722,401.60 is: 71,583,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,128,078.40 : 126,192,117.60 = 47,722,401.60 : x
  2. Step 2: Convert to fraction form
    84,128,078.40/126,192,117.60 = 47,722,401.60/x
  3. Step 3: Cross multiply
    84,128,078.40x = 126,192,117.60 × 47,722,401.60
  4. Step 4: Simplify right side
    84,128,078.40x = 6,022,190,914,861,628
  5. Step 5: Solve for x
    x = 6,022,190,914,861,628/84,128,078.40
  6. Step 6: Final answer
    x = 71,583,602.40

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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.