Home / 81,088,963.56-121,632,430.86-19,678,631.04

Finding the Fourth Proportional to 81,088,963.56, 121,632,430.86 and 19,678,631.04

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Solution

The fourth proportional to 81,088,963.56, 121,632,430.86 and 19,678,631.04 is: 29,517,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,088,963.56 : 121,632,430.86 = 19,678,631.04 : x
  2. Step 2: Convert to fraction form
    81,088,963.56/121,632,430.86 = 19,678,631.04/x
  3. Step 3: Cross multiply
    81,088,963.56x = 121,632,430.86 × 19,678,631.04
  4. Step 4: Simplify right side
    81,088,963.56x = 2,393,559,729,392,250
  5. Step 5: Solve for x
    x = 2,393,559,729,392,250/81,088,963.56
  6. Step 6: Final answer
    x = 29,517,700.37

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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.