Home / 81,007,321.96-121,461,775.26-31,764,177.40

Finding the Fourth Proportional to 81,007,321.96, 121,461,775.26 and 31,764,177.40

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Solution

The fourth proportional to 81,007,321.96, 121,461,775.26 and 31,764,177.40 is: 47,626,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007,321.96 : 121,461,775.26 = 31,764,177.40 : x
  2. Step 2: Convert to fraction form
    81,007,321.96/121,461,775.26 = 31,764,177.40/x
  3. Step 3: Cross multiply
    81,007,321.96x = 121,461,775.26 × 31,764,177.40
  4. Step 4: Simplify right side
    81,007,321.96x = 3,858,133,376,677,571
  5. Step 5: Solve for x
    x = 3,858,133,376,677,571/81,007,321.96
  6. Step 6: Final answer
    x = 47,626,971.04

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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.