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Finding the Fourth Proportional to 66,641.60, 91,967.87 and 36,428.94

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Solution

The fourth proportional to 66,641.60, 91,967.87 and 36,428.94 is: 50,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.60 : 91,967.87 = 36,428.94 : x
  2. Step 2: Convert to fraction form
    66,641.60/91,967.87 = 36,428.94/x
  3. Step 3: Cross multiply
    66,641.60x = 91,967.87 × 36,428.94
  4. Step 4: Simplify right side
    66,641.60x = 3,350,292,018.16
  5. Step 5: Solve for x
    x = 3,350,292,018.16/66,641.60
  6. Step 6: Final answer
    x = 50,273.28

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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.