Home / 70,154.82-105,228.81-25,778.16

Finding the Fourth Proportional to 70,154.82, 105,228.81 and 25,778.16

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Solution

The fourth proportional to 70,154.82, 105,228.81 and 25,778.16 is: 38,665.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,154.82 : 105,228.81 = 25,778.16 : x
  2. Step 2: Convert to fraction form
    70,154.82/105,228.81 = 25,778.16/x
  3. Step 3: Cross multiply
    70,154.82x = 105,228.81 × 25,778.16
  4. Step 4: Simplify right side
    70,154.82x = 2,712,605,100.79
  5. Step 5: Solve for x
    x = 2,712,605,100.79/70,154.82
  6. Step 6: Final answer
    x = 38,665.98

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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.