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Finding the Fourth Proportional to 64,440, 88,927.20 and 39,294.72

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Solution

The fourth proportional to 64,440, 88,927.20 and 39,294.72 is: 54,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,440 : 88,927.20 = 39,294.72 : x
  2. Step 2: Convert to fraction form
    64,440/88,927.20 = 39,294.72/x
  3. Step 3: Cross multiply
    64,440x = 88,927.20 × 39,294.72
  4. Step 4: Simplify right side
    64,440x = 3,494,369,424.38
  5. Step 5: Solve for x
    x = 3,494,369,424.38/64,440
  6. Step 6: Final answer
    x = 54,226.71

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1.5x scale

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.