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Finding the Fourth Proportional to 101,870.87, 152,806.16 and 38,690.87

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Solution

The fourth proportional to 101,870.87, 152,806.16 and 38,690.87 is: 58,036.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,870.87 : 152,806.16 = 38,690.87 : x
  2. Step 2: Convert to fraction form
    101,870.87/152,806.16 = 38,690.87/x
  3. Step 3: Cross multiply
    101,870.87x = 152,806.16 × 38,690.87
  4. Step 4: Simplify right side
    101,870.87x = 5,912,202,314.27
  5. Step 5: Solve for x
    x = 5,912,202,314.27/101,870.87
  6. Step 6: Final answer
    x = 58,036.24

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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.