Home / 71,736,013.60-107,604,020.40-66,193,280.80

Finding the Fourth Proportional to 71,736,013.60, 107,604,020.40 and 66,193,280.80

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Solution

The fourth proportional to 71,736,013.60, 107,604,020.40 and 66,193,280.80 is: 99,289,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,736,013.60 : 107,604,020.40 = 66,193,280.80 : x
  2. Step 2: Convert to fraction form
    71,736,013.60/107,604,020.40 = 66,193,280.80/x
  3. Step 3: Cross multiply
    71,736,013.60x = 107,604,020.40 × 66,193,280.80
  4. Step 4: Simplify right side
    71,736,013.60x = 7,122,663,137,546,128
  5. Step 5: Solve for x
    x = 7,122,663,137,546,128/71,736,013.60
  6. Step 6: Final answer
    x = 99,289,921.20

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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.