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Finding the Fourth Proportional to 38,750.71, 58,071.93 and 20,942.98

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Solution

The fourth proportional to 38,750.71, 58,071.93 and 20,942.98 is: 31,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,750.71 : 58,071.93 = 20,942.98 : x
  2. Step 2: Convert to fraction form
    38,750.71/58,071.93 = 20,942.98/x
  3. Step 3: Cross multiply
    38,750.71x = 58,071.93 × 20,942.98
  4. Step 4: Simplify right side
    38,750.71x = 1,216,198,873.48
  5. Step 5: Solve for x
    x = 1,216,198,873.48/38,750.71
  6. Step 6: Final answer
    x = 31,385.21

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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.