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Finding the Fourth Proportional to 65,373, 90,216.18 and 35,565

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Solution

The fourth proportional to 65,373, 90,216.18 and 35,565 is: 49,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,373 : 90,216.18 = 35,565 : x
  2. Step 2: Convert to fraction form
    65,373/90,216.18 = 35,565/x
  3. Step 3: Cross multiply
    65,373x = 90,216.18 × 35,565
  4. Step 4: Simplify right side
    65,373x = 3,208,538,441.70
  5. Step 5: Solve for x
    x = 3,208,538,441.70/65,373
  6. Step 6: Final answer
    x = 49,080.48

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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.