Home / 65,948.98-91,007.70-38,724.64

Finding the Fourth Proportional to 65,948.98, 91,007.70 and 38,724.64

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Solution

The fourth proportional to 65,948.98, 91,007.70 and 38,724.64 is: 53,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,948.98 : 91,007.70 = 38,724.64 : x
  2. Step 2: Convert to fraction form
    65,948.98/91,007.70 = 38,724.64/x
  3. Step 3: Cross multiply
    65,948.98x = 91,007.70 × 38,724.64
  4. Step 4: Simplify right side
    65,948.98x = 3,524,240,419.73
  5. Step 5: Solve for x
    x = 3,524,240,419.73/65,948.98
  6. Step 6: Final answer
    x = 53,438.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.