Home / 86,289,321.70-129,433,982.55-40,939,689.70

Finding the Fourth Proportional to 86,289,321.70, 129,433,982.55 and 40,939,689.70

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Solution

The fourth proportional to 86,289,321.70, 129,433,982.55 and 40,939,689.70 is: 61,409,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,289,321.70 : 129,433,982.55 = 40,939,689.70 : x
  2. Step 2: Convert to fraction form
    86,289,321.70/129,433,982.55 = 40,939,689.70/x
  3. Step 3: Cross multiply
    86,289,321.70x = 129,433,982.55 × 40,939,689.70
  4. Step 4: Simplify right side
    86,289,321.70x = 5,298,987,082,232,215
  5. Step 5: Solve for x
    x = 5,298,987,082,232,215/86,289,321.70
  6. Step 6: Final answer
    x = 61,409,534.55

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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.