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Finding the Fourth Proportional to 61,957.50, 92,936.28 and 20,407.74

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Solution

The fourth proportional to 61,957.50, 92,936.28 and 20,407.74 is: 30,611.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,957.50 : 92,936.28 = 20,407.74 : x
  2. Step 2: Convert to fraction form
    61,957.50/92,936.28 = 20,407.74/x
  3. Step 3: Cross multiply
    61,957.50x = 92,936.28 × 20,407.74
  4. Step 4: Simplify right side
    61,957.50x = 1,896,619,438.81
  5. Step 5: Solve for x
    x = 1,896,619,438.81/61,957.50
  6. Step 6: Final answer
    x = 30,611.62

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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.