Home / 81,176,478.90-121,756,339.71-55,082,856.89

Finding the Fourth Proportional to 81,176,478.90, 121,756,339.71 and 55,082,856.89

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Solution

The fourth proportional to 81,176,478.90, 121,756,339.71 and 55,082,856.89 is: 82,618,599.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,176,478.90 : 121,756,339.71 = 55,082,856.89 : x
  2. Step 2: Convert to fraction form
    81,176,478.90/121,756,339.71 = 55,082,856.89/x
  3. Step 3: Cross multiply
    81,176,478.90x = 121,756,339.71 × 55,082,856.89
  4. Step 4: Simplify right side
    81,176,478.90x = 6,706,687,035,087,372
  5. Step 5: Solve for x
    x = 6,706,687,035,087,372/81,176,478.90
  6. Step 6: Final answer
    x = 82,618,599.94

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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.