Home / 39,330.40-54,345.04-31,437.76

Finding the Fourth Proportional to 39,330.40, 54,345.04 and 31,437.76

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Solution

The fourth proportional to 39,330.40, 54,345.04 and 31,437.76 is: 43,439.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330.40 : 54,345.04 = 31,437.76 : x
  2. Step 2: Convert to fraction form
    39,330.40/54,345.04 = 31,437.76/x
  3. Step 3: Cross multiply
    39,330.40x = 54,345.04 × 31,437.76
  4. Step 4: Simplify right side
    39,330.40x = 1,708,486,324.71
  5. Step 5: Solve for x
    x = 1,708,486,324.71/39,330.40
  6. Step 6: Final answer
    x = 43,439.33

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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.