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Finding the Fourth Proportional to 65,697.18, 90,662.09 and 35,482.49

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Solution

The fourth proportional to 65,697.18, 90,662.09 and 35,482.49 is: 48,965.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,697.18 : 90,662.09 = 35,482.49 : x
  2. Step 2: Convert to fraction form
    65,697.18/90,662.09 = 35,482.49/x
  3. Step 3: Cross multiply
    65,697.18x = 90,662.09 × 35,482.49
  4. Step 4: Simplify right side
    65,697.18x = 3,216,916,411.06
  5. Step 5: Solve for x
    x = 3,216,916,411.06/65,697.18
  6. Step 6: Final answer
    x = 48,965.82

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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.