Home / 85,776,227.70-128,664,341.55-76,706,301.30

Finding the Fourth Proportional to 85,776,227.70, 128,664,341.55 and 76,706,301.30

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Solution

The fourth proportional to 85,776,227.70, 128,664,341.55 and 76,706,301.30 is: 115,059,451.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,776,227.70 : 128,664,341.55 = 76,706,301.30 : x
  2. Step 2: Convert to fraction form
    85,776,227.70/128,664,341.55 = 76,706,301.30/x
  3. Step 3: Cross multiply
    85,776,227.70x = 128,664,341.55 × 76,706,301.30
  4. Step 4: Simplify right side
    85,776,227.70x = 9,869,365,749,500,408
  5. Step 5: Solve for x
    x = 9,869,365,749,500,408/85,776,227.70
  6. Step 6: Final answer
    x = 115,059,451.95

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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.