Home / 81,242,943.70-121,860,123.55-26,648,337.82

Finding the Fourth Proportional to 81,242,943.70, 121,860,123.55 and 26,648,337.82

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Solution

The fourth proportional to 81,242,943.70, 121,860,123.55 and 26,648,337.82 is: 39,971,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242,943.70 : 121,860,123.55 = 26,648,337.82 : x
  2. Step 2: Convert to fraction form
    81,242,943.70/121,860,123.55 = 26,648,337.82/x
  3. Step 3: Cross multiply
    81,242,943.70x = 121,860,123.55 × 26,648,337.82
  4. Step 4: Simplify right side
    81,242,943.70x = 3,247,369,738,538,037
  5. Step 5: Solve for x
    x = 3,247,369,738,538,037/81,242,943.70
  6. Step 6: Final answer
    x = 39,971,098.91

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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.