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Finding the Fourth Proportional to 84,859.70, 127,289.55 and 34,923.20

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Solution

The fourth proportional to 84,859.70, 127,289.55 and 34,923.20 is: 52,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,859.70 : 127,289.55 = 34,923.20 : x
  2. Step 2: Convert to fraction form
    84,859.70/127,289.55 = 34,923.20/x
  3. Step 3: Cross multiply
    84,859.70x = 127,289.55 × 34,923.20
  4. Step 4: Simplify right side
    84,859.70x = 4,445,358,412.56
  5. Step 5: Solve for x
    x = 4,445,358,412.56/84,859.70
  6. Step 6: Final answer
    x = 52,384.80

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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.