Home / 8,128,047.40-12,192,071.10-7,344,226.60

Finding the Fourth Proportional to 8,128,047.40, 12,192,071.10 and 7,344,226.60

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Solution

The fourth proportional to 8,128,047.40, 12,192,071.10 and 7,344,226.60 is: 11,016,339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128,047.40 : 12,192,071.10 = 7,344,226.60 : x
  2. Step 2: Convert to fraction form
    8,128,047.40/12,192,071.10 = 7,344,226.60/x
  3. Step 3: Cross multiply
    8,128,047.40x = 12,192,071.10 × 7,344,226.60
  4. Step 4: Simplify right side
    8,128,047.40x = 89,541,332,881,711.25
  5. Step 5: Solve for x
    x = 89,541,332,881,711.25/8,128,047.40
  6. Step 6: Final answer
    x = 11,016,339.90

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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.