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Finding the Fourth Proportional to 65,480.95, 90,364.35 and 37,186.84

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Solution

The fourth proportional to 65,480.95, 90,364.35 and 37,186.84 is: 51,318.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,480.95 : 90,364.35 = 37,186.84 : x
  2. Step 2: Convert to fraction form
    65,480.95/90,364.35 = 37,186.84/x
  3. Step 3: Cross multiply
    65,480.95x = 90,364.35 × 37,186.84
  4. Step 4: Simplify right side
    65,480.95x = 3,360,364,625.15
  5. Step 5: Solve for x
    x = 3,360,364,625.15/65,480.95
  6. Step 6: Final answer
    x = 51,318.20

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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.