Home / 87,771,330.76-121,205,855.10-65,706,523.60

Finding the Fourth Proportional to 87,771,330.76, 121,205,855.10 and 65,706,523.60

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Solution

The fourth proportional to 87,771,330.76, 121,205,855.10 and 65,706,523.60 is: 90,735,953.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,771,330.76 : 121,205,855.10 = 65,706,523.60 : x
  2. Step 2: Convert to fraction form
    87,771,330.76/121,205,855.10 = 65,706,523.60/x
  3. Step 3: Cross multiply
    87,771,330.76x = 121,205,855.10 × 65,706,523.60
  4. Step 4: Simplify right side
    87,771,330.76x = 7,964,015,378,586,330
  5. Step 5: Solve for x
    x = 7,964,015,378,586,330/87,771,330.76
  6. Step 6: Final answer
    x = 90,735,953.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.