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Finding the Fourth Proportional to 65,533.46, 90,399.65 and 45,402.12

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Solution

The fourth proportional to 65,533.46, 90,399.65 and 45,402.12 is: 62,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,533.46 : 90,399.65 = 45,402.12 : x
  2. Step 2: Convert to fraction form
    65,533.46/90,399.65 = 45,402.12/x
  3. Step 3: Cross multiply
    65,533.46x = 90,399.65 × 45,402.12
  4. Step 4: Simplify right side
    65,533.46x = 4,104,335,530.25
  5. Step 5: Solve for x
    x = 4,104,335,530.25/65,533.46
  6. Step 6: Final answer
    x = 62,629.62

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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.