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Finding the Fourth Proportional to 64,500.64, 89,009.68 and 35,820.16

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Solution

The fourth proportional to 64,500.64, 89,009.68 and 35,820.16 is: 49,431.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,500.64 : 89,009.68 = 35,820.16 : x
  2. Step 2: Convert to fraction form
    64,500.64/89,009.68 = 35,820.16/x
  3. Step 3: Cross multiply
    64,500.64x = 89,009.68 × 35,820.16
  4. Step 4: Simplify right side
    64,500.64x = 3,188,340,979.15
  5. Step 5: Solve for x
    x = 3,188,340,979.15/64,500.64
  6. Step 6: Final answer
    x = 49,431.15

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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.