Home / 85,211,321.70-127,816,982.55-71,606,432.10

Finding the Fourth Proportional to 85,211,321.70, 127,816,982.55 and 71,606,432.10

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Solution

The fourth proportional to 85,211,321.70, 127,816,982.55 and 71,606,432.10 is: 107,409,648.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,321.70 : 127,816,982.55 = 71,606,432.10 : x
  2. Step 2: Convert to fraction form
    85,211,321.70/127,816,982.55 = 71,606,432.10/x
  3. Step 3: Cross multiply
    85,211,321.70x = 127,816,982.55 × 71,606,432.10
  4. Step 4: Simplify right side
    85,211,321.70x = 9,152,518,082,193,458
  5. Step 5: Solve for x
    x = 9,152,518,082,193,458/85,211,321.70
  6. Step 6: Final answer
    x = 107,409,648.15

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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.