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Finding the Fourth Proportional to 66,928.64, 92,363.52 and 37,120

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Solution

The fourth proportional to 66,928.64, 92,363.52 and 37,120 is: 51,226.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928.64 : 92,363.52 = 37,120 : x
  2. Step 2: Convert to fraction form
    66,928.64/92,363.52 = 37,120/x
  3. Step 3: Cross multiply
    66,928.64x = 92,363.52 × 37,120
  4. Step 4: Simplify right side
    66,928.64x = 3,428,533,862.40
  5. Step 5: Solve for x
    x = 3,428,533,862.40/66,928.64
  6. Step 6: Final answer
    x = 51,226.71

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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.