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Finding the Fourth Proportional to 64,757.16, 97,135.38 and 20,387.16

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Solution

The fourth proportional to 64,757.16, 97,135.38 and 20,387.16 is: 30,580.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,757.16 : 97,135.38 = 20,387.16 : x
  2. Step 2: Convert to fraction form
    64,757.16/97,135.38 = 20,387.16/x
  3. Step 3: Cross multiply
    64,757.16x = 97,135.38 × 20,387.16
  4. Step 4: Simplify right side
    64,757.16x = 1,980,314,533.72
  5. Step 5: Solve for x
    x = 1,980,314,533.72/64,757.16
  6. Step 6: Final answer
    x = 30,580.63

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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.