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Finding the Fourth Proportional to 89,834,438.80, 134,499,715.80 and 87,315,014.80

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Solution

The fourth proportional to 89,834,438.80, 134,499,715.80 and 87,315,014.80 is: 130,727,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,834,438.80 : 134,499,715.80 = 87,315,014.80 : x
  2. Step 2: Convert to fraction form
    89,834,438.80/134,499,715.80 = 87,315,014.80/x
  3. Step 3: Cross multiply
    89,834,438.80x = 134,499,715.80 × 87,315,014.80
  4. Step 4: Simplify right side
    89,834,438.80x = 11,743,844,675,672,794
  5. Step 5: Solve for x
    x = 11,743,844,675,672,794/89,834,438.80
  6. Step 6: Final answer
    x = 130,727,645.57

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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.