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Finding the Fourth Proportional to 66,943.04, 92,370.96 and 38,643.28

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Solution

The fourth proportional to 66,943.04, 92,370.96 and 38,643.28 is: 53,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,943.04 : 92,370.96 = 38,643.28 : x
  2. Step 2: Convert to fraction form
    66,943.04/92,370.96 = 38,643.28/x
  3. Step 3: Cross multiply
    66,943.04x = 92,370.96 × 38,643.28
  4. Step 4: Simplify right side
    66,943.04x = 3,569,516,871.15
  5. Step 5: Solve for x
    x = 3,569,516,871.15/66,943.04
  6. Step 6: Final answer
    x = 53,321.70

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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.