Home / 81,141,954.50-121,711,631.85-25,808,985.98

Finding the Fourth Proportional to 81,141,954.50, 121,711,631.85 and 25,808,985.98

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Solution

The fourth proportional to 81,141,954.50, 121,711,631.85 and 25,808,985.98 is: 38,713,065.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141,954.50 : 121,711,631.85 = 25,808,985.98 : x
  2. Step 2: Convert to fraction form
    81,141,954.50/121,711,631.85 = 25,808,985.98/x
  3. Step 3: Cross multiply
    81,141,954.50x = 121,711,631.85 × 25,808,985.98
  4. Step 4: Simplify right side
    81,141,954.50x = 3,141,253,800,019,571.50
  5. Step 5: Solve for x
    x = 3,141,253,800,019,571.50/81,141,954.50
  6. Step 6: Final answer
    x = 38,713,065.51

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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.