Home / 85,964,458.10-128,946,687.15-80,921,462.90

Finding the Fourth Proportional to 85,964,458.10, 128,946,687.15 and 80,921,462.90

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Solution

The fourth proportional to 85,964,458.10, 128,946,687.15 and 80,921,462.90 is: 121,382,194.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,964,458.10 : 128,946,687.15 = 80,921,462.90 : x
  2. Step 2: Convert to fraction form
    85,964,458.10/128,946,687.15 = 80,921,462.90/x
  3. Step 3: Cross multiply
    85,964,458.10x = 128,946,687.15 × 80,921,462.90
  4. Step 4: Simplify right side
    85,964,458.10x = 10,434,554,560,286,632
  5. Step 5: Solve for x
    x = 10,434,554,560,286,632/85,964,458.10
  6. Step 6: Final answer
    x = 121,382,194.35

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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.