Home / 65,921,131.20-98,811,712.80-31,820,260.80

Finding the Fourth Proportional to 65,921,131.20, 98,811,712.80 and 31,820,260.80

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Solution

The fourth proportional to 65,921,131.20, 98,811,712.80 and 31,820,260.80 is: 47,696,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,921,131.20 : 98,811,712.80 = 31,820,260.80 : x
  2. Step 2: Convert to fraction form
    65,921,131.20/98,811,712.80 = 31,820,260.80/x
  3. Step 3: Cross multiply
    65,921,131.20x = 98,811,712.80 × 31,820,260.80
  4. Step 4: Simplify right side
    65,921,131.20x = 3,144,214,471,390,698
  5. Step 5: Solve for x
    x = 3,144,214,471,390,698/65,921,131.20
  6. Step 6: Final answer
    x = 47,696,609.78

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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.