Home / 31,421,646.88-43,361,192.99-18,191,381.65

Finding the Fourth Proportional to 31,421,646.88, 43,361,192.99 and 18,191,381.65

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Solution

The fourth proportional to 31,421,646.88, 43,361,192.99 and 18,191,381.65 is: 25,103,713.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421,646.88 : 43,361,192.99 = 18,191,381.65 : x
  2. Step 2: Convert to fraction form
    31,421,646.88/43,361,192.99 = 18,191,381.65/x
  3. Step 3: Cross multiply
    31,421,646.88x = 43,361,192.99 × 18,191,381.65
  4. Step 4: Simplify right side
    31,421,646.88x = 788,800,010,417,470.12
  5. Step 5: Solve for x
    x = 788,800,010,417,470.12/31,421,646.88
  6. Step 6: Final answer
    x = 25,103,713.17

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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.