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Finding the Fourth Proportional to 71,799.40, 107,828.70 and 52,100.20

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Solution

The fourth proportional to 71,799.40, 107,828.70 and 52,100.20 is: 78,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,799.40 : 107,828.70 = 52,100.20 : x
  2. Step 2: Convert to fraction form
    71,799.40/107,828.70 = 52,100.20/x
  3. Step 3: Cross multiply
    71,799.40x = 107,828.70 × 52,100.20
  4. Step 4: Simplify right side
    71,799.40x = 5,617,896,835.74
  5. Step 5: Solve for x
    x = 5,617,896,835.74/71,799.40
  6. Step 6: Final answer
    x = 78,244.34

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1.5x scale

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.