Home / 54,780.51-75,595.57-30,909.40

Finding the Fourth Proportional to 54,780.51, 75,595.57 and 30,909.40

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Solution

The fourth proportional to 54,780.51, 75,595.57 and 30,909.40 is: 42,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,780.51 : 75,595.57 = 30,909.40 : x
  2. Step 2: Convert to fraction form
    54,780.51/75,595.57 = 30,909.40/x
  3. Step 3: Cross multiply
    54,780.51x = 75,595.57 × 30,909.40
  4. Step 4: Simplify right side
    54,780.51x = 2,336,613,870.32
  5. Step 5: Solve for x
    x = 2,336,613,870.32/54,780.51
  6. Step 6: Final answer
    x = 42,654.11

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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.