Home / 70,147.16-105,262.68-25,778.40

Finding the Fourth Proportional to 70,147.16, 105,262.68 and 25,778.40

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Solution

The fourth proportional to 70,147.16, 105,262.68 and 25,778.40 is: 38,683.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,147.16 : 105,262.68 = 25,778.40 : x
  2. Step 2: Convert to fraction form
    70,147.16/105,262.68 = 25,778.40/x
  3. Step 3: Cross multiply
    70,147.16x = 105,262.68 × 25,778.40
  4. Step 4: Simplify right side
    70,147.16x = 2,713,503,470.11
  5. Step 5: Solve for x
    x = 2,713,503,470.11/70,147.16
  6. Step 6: Final answer
    x = 38,683.01

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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.