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Finding the Fourth Proportional to 70,139.36, 96,788.76 and 38,302.16

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Solution

The fourth proportional to 70,139.36, 96,788.76 and 38,302.16 is: 52,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.36 : 96,788.76 = 38,302.16 : x
  2. Step 2: Convert to fraction form
    70,139.36/96,788.76 = 38,302.16/x
  3. Step 3: Cross multiply
    70,139.36x = 96,788.76 × 38,302.16
  4. Step 4: Simplify right side
    70,139.36x = 3,707,218,571.72
  5. Step 5: Solve for x
    x = 3,707,218,571.72/70,139.36
  6. Step 6: Final answer
    x = 52,855.04

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1.5x scale

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.