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Finding the Fourth Proportional to 75,383.22, 112,894.20 and 42,020.40

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Solution

The fourth proportional to 75,383.22, 112,894.20 and 42,020.40 is: 62,929.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,383.22 : 112,894.20 = 42,020.40 : x
  2. Step 2: Convert to fraction form
    75,383.22/112,894.20 = 42,020.40/x
  3. Step 3: Cross multiply
    75,383.22x = 112,894.20 × 42,020.40
  4. Step 4: Simplify right side
    75,383.22x = 4,743,859,441.68
  5. Step 5: Solve for x
    x = 4,743,859,441.68/75,383.22
  6. Step 6: Final answer
    x = 62,929.91

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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.