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Finding the Fourth Proportional to 66,243.78, 91,389.44 and 37,557.40

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Solution

The fourth proportional to 66,243.78, 91,389.44 and 37,557.40 is: 51,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,243.78 : 91,389.44 = 37,557.40 : x
  2. Step 2: Convert to fraction form
    66,243.78/91,389.44 = 37,557.40/x
  3. Step 3: Cross multiply
    66,243.78x = 91,389.44 × 37,557.40
  4. Step 4: Simplify right side
    66,243.78x = 3,432,349,753.86
  5. Step 5: Solve for x
    x = 3,432,349,753.86/66,243.78
  6. Step 6: Final answer
    x = 51,813.92

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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.