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Finding the Fourth Proportional to 70,719.16, 106,019.16 and 30,708.04

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Solution

The fourth proportional to 70,719.16, 106,019.16 and 30,708.04 is: 46,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,719.16 : 106,019.16 = 30,708.04 : x
  2. Step 2: Convert to fraction form
    70,719.16/106,019.16 = 30,708.04/x
  3. Step 3: Cross multiply
    70,719.16x = 106,019.16 × 30,708.04
  4. Step 4: Simplify right side
    70,719.16x = 3,255,640,606.05
  5. Step 5: Solve for x
    x = 3,255,640,606.05/70,719.16
  6. Step 6: Final answer
    x = 46,036.19

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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.