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Finding the Fourth Proportional to 62,931, 94,396.50 and 19,155

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Solution

The fourth proportional to 62,931, 94,396.50 and 19,155 is: 28,732.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,931 : 94,396.50 = 19,155 : x
  2. Step 2: Convert to fraction form
    62,931/94,396.50 = 19,155/x
  3. Step 3: Cross multiply
    62,931x = 94,396.50 × 19,155
  4. Step 4: Simplify right side
    62,931x = 1,808,164,957.50
  5. Step 5: Solve for x
    x = 1,808,164,957.50/62,931
  6. Step 6: Final answer
    x = 28,732.50

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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.