Home / 81,071,084.57-121,727,972.57-70,175,067.84

Finding the Fourth Proportional to 81,071,084.57, 121,727,972.57 and 70,175,067.84

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Solution

The fourth proportional to 81,071,084.57, 121,727,972.57 and 70,175,067.84 is: 105,367,638.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,071,084.57 : 121,727,972.57 = 70,175,067.84 : x
  2. Step 2: Convert to fraction form
    81,071,084.57/121,727,972.57 = 70,175,067.84/x
  3. Step 3: Cross multiply
    81,071,084.57x = 121,727,972.57 × 70,175,067.84
  4. Step 4: Simplify right side
    81,071,084.57x = 8,542,268,732,774,534
  5. Step 5: Solve for x
    x = 8,542,268,732,774,534/81,071,084.57
  6. Step 6: Final answer
    x = 105,367,638.52

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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.