Home / 55,281.39-76,290.35-31,412.10

Finding the Fourth Proportional to 55,281.39, 76,290.35 and 31,412.10

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Solution

The fourth proportional to 55,281.39, 76,290.35 and 31,412.10 is: 43,349.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,281.39 : 76,290.35 = 31,412.10 : x
  2. Step 2: Convert to fraction form
    55,281.39/76,290.35 = 31,412.10/x
  3. Step 3: Cross multiply
    55,281.39x = 76,290.35 × 31,412.10
  4. Step 4: Simplify right side
    55,281.39x = 2,396,440,103.24
  5. Step 5: Solve for x
    x = 2,396,440,103.24/55,281.39
  6. Step 6: Final answer
    x = 43,349.85

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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.