Home / 81,915,547.80-122,873,321.70-75,679,973.40

Finding the Fourth Proportional to 81,915,547.80, 122,873,321.70 and 75,679,973.40

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Solution

The fourth proportional to 81,915,547.80, 122,873,321.70 and 75,679,973.40 is: 113,519,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,915,547.80 : 122,873,321.70 = 75,679,973.40 : x
  2. Step 2: Convert to fraction form
    81,915,547.80/122,873,321.70 = 75,679,973.40/x
  3. Step 3: Cross multiply
    81,915,547.80x = 122,873,321.70 × 75,679,973.40
  4. Step 4: Simplify right side
    81,915,547.80x = 9,299,049,717,825,644
  5. Step 5: Solve for x
    x = 9,299,049,717,825,644/81,915,547.80
  6. Step 6: Final answer
    x = 113,519,960.10

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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.