Home / 30,862.26-42,558.06-26,400.78

Finding the Fourth Proportional to 30,862.26, 42,558.06 and 26,400.78

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Solution

The fourth proportional to 30,862.26, 42,558.06 and 26,400.78 is: 36,405.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.26 : 42,558.06 = 26,400.78 : x
  2. Step 2: Convert to fraction form
    30,862.26/42,558.06 = 26,400.78/x
  3. Step 3: Cross multiply
    30,862.26x = 42,558.06 × 26,400.78
  4. Step 4: Simplify right side
    30,862.26x = 1,123,565,979.29
  5. Step 5: Solve for x
    x = 1,123,565,979.29/30,862.26
  6. Step 6: Final answer
    x = 36,405.82

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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.