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Finding the Fourth Proportional to 66,655.17, 91,992.24 and 38,360.25

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Solution

The fourth proportional to 66,655.17, 91,992.24 and 38,360.25 is: 52,941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,655.17 : 91,992.24 = 38,360.25 : x
  2. Step 2: Convert to fraction form
    66,655.17/91,992.24 = 38,360.25/x
  3. Step 3: Cross multiply
    66,655.17x = 91,992.24 × 38,360.25
  4. Step 4: Simplify right side
    66,655.17x = 3,528,845,324.46
  5. Step 5: Solve for x
    x = 3,528,845,324.46/66,655.17
  6. Step 6: Final answer
    x = 52,941.81

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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.