Home / 70,281.12-105,462.91-25,938.78

Finding the Fourth Proportional to 70,281.12, 105,462.91 and 25,938.78

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Solution

The fourth proportional to 70,281.12, 105,462.91 and 25,938.78 is: 38,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,281.12 : 105,462.91 = 25,938.78 : x
  2. Step 2: Convert to fraction form
    70,281.12/105,462.91 = 25,938.78/x
  3. Step 3: Cross multiply
    70,281.12x = 105,462.91 × 25,938.78
  4. Step 4: Simplify right side
    70,281.12x = 2,735,579,450.82
  5. Step 5: Solve for x
    x = 2,735,579,450.82/70,281.12
  6. Step 6: Final answer
    x = 38,923.39

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1.5x scale

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.