Home / 81,088,975.60-121,632,448.80-19,678,643.04

Finding the Fourth Proportional to 81,088,975.60, 121,632,448.80 and 19,678,643.04

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Solution

The fourth proportional to 81,088,975.60, 121,632,448.80 and 19,678,643.04 is: 29,517,718.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,088,975.60 : 121,632,448.80 = 19,678,643.04 : x
  2. Step 2: Convert to fraction form
    81,088,975.60/121,632,448.80 = 19,678,643.04/x
  3. Step 3: Cross multiply
    81,088,975.60x = 121,632,448.80 × 19,678,643.04
  4. Step 4: Simplify right side
    81,088,975.60x = 2,393,561,542,016,276
  5. Step 5: Solve for x
    x = 2,393,561,542,016,276/81,088,975.60
  6. Step 6: Final answer
    x = 29,517,718.34

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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.