Home / 81,418,543.40-122,127,815.10-36,068,911.40

Finding the Fourth Proportional to 81,418,543.40, 122,127,815.10 and 36,068,911.40

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Solution

The fourth proportional to 81,418,543.40, 122,127,815.10 and 36,068,911.40 is: 54,103,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,418,543.40 : 122,127,815.10 = 36,068,911.40 : x
  2. Step 2: Convert to fraction form
    81,418,543.40/122,127,815.10 = 36,068,911.40/x
  3. Step 3: Cross multiply
    81,418,543.40x = 122,127,815.10 × 36,068,911.40
  4. Step 4: Simplify right side
    81,418,543.40x = 4,405,017,342,317,481.50
  5. Step 5: Solve for x
    x = 4,405,017,342,317,481.50/81,418,543.40
  6. Step 6: Final answer
    x = 54,103,367.10

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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.