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Finding the Fourth Proportional to 65,617.05, 90,551.51 and 35,809.05

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Solution

The fourth proportional to 65,617.05, 90,551.51 and 35,809.05 is: 49,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,617.05 : 90,551.51 = 35,809.05 : x
  2. Step 2: Convert to fraction form
    65,617.05/90,551.51 = 35,809.05/x
  3. Step 3: Cross multiply
    65,617.05x = 90,551.51 × 35,809.05
  4. Step 4: Simplify right side
    65,617.05x = 3,242,563,370.12
  5. Step 5: Solve for x
    x = 3,242,563,370.12/65,617.05
  6. Step 6: Final answer
    x = 49,416.48

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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.