Home / 8,781,128.80-12,118,519.92-4,914,095.20

Finding the Fourth Proportional to 8,781,128.80, 12,118,519.92 and 4,914,095.20

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Solution

The fourth proportional to 8,781,128.80, 12,118,519.92 and 4,914,095.20 is: 6,781,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781,128.80 : 12,118,519.92 = 4,914,095.20 : x
  2. Step 2: Convert to fraction form
    8,781,128.80/12,118,519.92 = 4,914,095.20/x
  3. Step 3: Cross multiply
    8,781,128.80x = 12,118,519.92 × 4,914,095.20
  4. Step 4: Simplify right side
    8,781,128.80x = 59,551,560,569,976.38
  5. Step 5: Solve for x
    x = 59,551,560,569,976.38/8,781,128.80
  6. Step 6: Final answer
    x = 6,781,765.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.