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Finding the Fourth Proportional to 64,976.60, 97,464.90 and 15,728.60

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Solution

The fourth proportional to 64,976.60, 97,464.90 and 15,728.60 is: 23,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.60 : 97,464.90 = 15,728.60 : x
  2. Step 2: Convert to fraction form
    64,976.60/97,464.90 = 15,728.60/x
  3. Step 3: Cross multiply
    64,976.60x = 97,464.90 × 15,728.60
  4. Step 4: Simplify right side
    64,976.60x = 1,532,986,426.14
  5. Step 5: Solve for x
    x = 1,532,986,426.14/64,976.60
  6. Step 6: Final answer
    x = 23,592.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.