Home / 39,639.04-54,635.52-31,655.68

Finding the Fourth Proportional to 39,639.04, 54,635.52 and 31,655.68

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Solution

The fourth proportional to 39,639.04, 54,635.52 and 31,655.68 is: 43,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.04 : 54,635.52 = 31,655.68 : x
  2. Step 2: Convert to fraction form
    39,639.04/54,635.52 = 31,655.68/x
  3. Step 3: Cross multiply
    39,639.04x = 54,635.52 × 31,655.68
  4. Step 4: Simplify right side
    39,639.04x = 1,729,524,537.75
  5. Step 5: Solve for x
    x = 1,729,524,537.75/39,639.04
  6. Step 6: Final answer
    x = 43,631.85

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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.