Home / 31,748,821.12-43,812,103.68-18,696,630.40

Finding the Fourth Proportional to 31,748,821.12, 43,812,103.68 and 18,696,630.40

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Solution

The fourth proportional to 31,748,821.12, 43,812,103.68 and 18,696,630.40 is: 25,800,602.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,748,821.12 : 43,812,103.68 = 18,696,630.40 : x
  2. Step 2: Convert to fraction form
    31,748,821.12/43,812,103.68 = 18,696,630.40/x
  3. Step 3: Cross multiply
    31,748,821.12x = 43,812,103.68 × 18,696,630.40
  4. Step 4: Simplify right side
    31,748,821.12x = 819,138,709,551,439.75
  5. Step 5: Solve for x
    x = 819,138,709,551,439.75/31,748,821.12
  6. Step 6: Final answer
    x = 25,800,602.37

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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.