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Finding the Fourth Proportional to 64,719.70, 97,079.55 and 38,410.90

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Solution

The fourth proportional to 64,719.70, 97,079.55 and 38,410.90 is: 57,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,719.70 : 97,079.55 = 38,410.90 : x
  2. Step 2: Convert to fraction form
    64,719.70/97,079.55 = 38,410.90/x
  3. Step 3: Cross multiply
    64,719.70x = 97,079.55 × 38,410.90
  4. Step 4: Simplify right side
    64,719.70x = 3,728,912,887.10
  5. Step 5: Solve for x
    x = 3,728,912,887.10/64,719.70
  6. Step 6: Final answer
    x = 57,616.35

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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.