Home / 31,196,728.80-43,062,308.64-21,439,472.04

Finding the Fourth Proportional to 31,196,728.80, 43,062,308.64 and 21,439,472.04

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Solution

The fourth proportional to 31,196,728.80, 43,062,308.64 and 21,439,472.04 is: 29,593,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,196,728.80 : 43,062,308.64 = 21,439,472.04 : x
  2. Step 2: Convert to fraction form
    31,196,728.80/43,062,308.64 = 21,439,472.04/x
  3. Step 3: Cross multiply
    31,196,728.80x = 43,062,308.64 × 21,439,472.04
  4. Step 4: Simplify right side
    31,196,728.80x = 923,233,162,065,130.38
  5. Step 5: Solve for x
    x = 923,233,162,065,130.38/31,196,728.80
  6. Step 6: Final answer
    x = 29,593,909.28

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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.