Home / 86,228,140.80-129,129,634.80-57,317,750.40

Finding the Fourth Proportional to 86,228,140.80, 129,129,634.80 and 57,317,750.40

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Solution

The fourth proportional to 86,228,140.80, 129,129,634.80 and 57,317,750.40 is: 85,835,321.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,228,140.80 : 129,129,634.80 = 57,317,750.40 : x
  2. Step 2: Convert to fraction form
    86,228,140.80/129,129,634.80 = 57,317,750.40/x
  3. Step 3: Cross multiply
    86,228,140.80x = 129,129,634.80 × 57,317,750.40
  4. Step 4: Simplify right side
    86,228,140.80x = 7,401,420,176,709,554
  5. Step 5: Solve for x
    x = 7,401,420,176,709,554/86,228,140.80
  6. Step 6: Final answer
    x = 85,835,321.37

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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.