Home / 38,990.91-58,445.65-28,291.41

Finding the Fourth Proportional to 38,990.91, 58,445.65 and 28,291.41

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Solution

The fourth proportional to 38,990.91, 58,445.65 and 28,291.41 is: 42,407.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.91 : 58,445.65 = 28,291.41 : x
  2. Step 2: Convert to fraction form
    38,990.91/58,445.65 = 28,291.41/x
  3. Step 3: Cross multiply
    38,990.91x = 58,445.65 × 28,291.41
  4. Step 4: Simplify right side
    38,990.91x = 1,653,509,846.87
  5. Step 5: Solve for x
    x = 1,653,509,846.87/38,990.91
  6. Step 6: Final answer
    x = 42,407.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.