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Finding the Fourth Proportional to 65,920.02, 90,969.90 and 35,705.70

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Solution

The fourth proportional to 65,920.02, 90,969.90 and 35,705.70 is: 49,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,920.02 : 90,969.90 = 35,705.70 : x
  2. Step 2: Convert to fraction form
    65,920.02/90,969.90 = 35,705.70/x
  3. Step 3: Cross multiply
    65,920.02x = 90,969.90 × 35,705.70
  4. Step 4: Simplify right side
    65,920.02x = 3,248,143,958.43
  5. Step 5: Solve for x
    x = 3,248,143,958.43/65,920.02
  6. Step 6: Final answer
    x = 49,274.01

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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.