Home / 31,129,125.20-46,693,687.80-13,213,221.20

Finding the Fourth Proportional to 31,129,125.20, 46,693,687.80 and 13,213,221.20

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Solution

The fourth proportional to 31,129,125.20, 46,693,687.80 and 13,213,221.20 is: 19,819,831.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129,125.20 : 46,693,687.80 = 13,213,221.20 : x
  2. Step 2: Convert to fraction form
    31,129,125.20/46,693,687.80 = 13,213,221.20/x
  3. Step 3: Cross multiply
    31,129,125.20x = 46,693,687.80 × 13,213,221.20
  4. Step 4: Simplify right side
    31,129,125.20x = 616,974,025,545,141.25
  5. Step 5: Solve for x
    x = 616,974,025,545,141.25/31,129,125.20
  6. Step 6: Final answer
    x = 19,819,831.80

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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.