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Finding the Fourth Proportional to 64,863.72, 89,503.98 and 38,000.07

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Solution

The fourth proportional to 64,863.72, 89,503.98 and 38,000.07 is: 52,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,863.72 : 89,503.98 = 38,000.07 : x
  2. Step 2: Convert to fraction form
    64,863.72/89,503.98 = 38,000.07/x
  3. Step 3: Cross multiply
    64,863.72x = 89,503.98 × 38,000.07
  4. Step 4: Simplify right side
    64,863.72x = 3,401,157,505.28
  5. Step 5: Solve for x
    x = 3,401,157,505.28/64,863.72
  6. Step 6: Final answer
    x = 52,435.44

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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.