Home / 90,902,955.78-125,442,454.68-51,209,561.88

Finding the Fourth Proportional to 90,902,955.78, 125,442,454.68 and 51,209,561.88

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Solution

The fourth proportional to 90,902,955.78, 125,442,454.68 and 51,209,561.88 is: 70,667,153.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,902,955.78 : 125,442,454.68 = 51,209,561.88 : x
  2. Step 2: Convert to fraction form
    90,902,955.78/125,442,454.68 = 51,209,561.88/x
  3. Step 3: Cross multiply
    90,902,955.78x = 125,442,454.68 × 51,209,561.88
  4. Step 4: Simplify right side
    90,902,955.78x = 6,423,853,145,314,556
  5. Step 5: Solve for x
    x = 6,423,853,145,314,556/90,902,955.78
  6. Step 6: Final answer
    x = 70,667,153.67

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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.