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Finding the Fourth Proportional to 64,718.52, 97,077.78 and 20,349.16

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Solution

The fourth proportional to 64,718.52, 97,077.78 and 20,349.16 is: 30,523.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,718.52 : 97,077.78 = 20,349.16 : x
  2. Step 2: Convert to fraction form
    64,718.52/97,077.78 = 20,349.16/x
  3. Step 3: Cross multiply
    64,718.52x = 97,077.78 × 20,349.16
  4. Step 4: Simplify right side
    64,718.52x = 1,975,451,277.66
  5. Step 5: Solve for x
    x = 1,975,451,277.66/64,718.52
  6. Step 6: Final answer
    x = 30,523.74

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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.