Home / 31,421,825.40-43,361,439.08-18,191,560.17

Finding the Fourth Proportional to 31,421,825.40, 43,361,439.08 and 18,191,560.17

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Solution

The fourth proportional to 31,421,825.40, 43,361,439.08 and 18,191,560.17 is: 25,103,959.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421,825.40 : 43,361,439.08 = 18,191,560.17 : x
  2. Step 2: Convert to fraction form
    31,421,825.40/43,361,439.08 = 18,191,560.17/x
  3. Step 3: Cross multiply
    31,421,825.40x = 43,361,439.08 × 18,191,560.17
  4. Step 4: Simplify right side
    31,421,825.40x = 788,812,227,990,651.75
  5. Step 5: Solve for x
    x = 788,812,227,990,651.75/31,421,825.40
  6. Step 6: Final answer
    x = 25,103,959.36

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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.