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Finding the Fourth Proportional to 64,731.42, 89,331.03 and 36,438.12

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Solution

The fourth proportional to 64,731.42, 89,331.03 and 36,438.12 is: 50,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,731.42 : 89,331.03 = 36,438.12 : x
  2. Step 2: Convert to fraction form
    64,731.42/89,331.03 = 36,438.12/x
  3. Step 3: Cross multiply
    64,731.42x = 89,331.03 × 36,438.12
  4. Step 4: Simplify right side
    64,731.42x = 3,255,054,790.86
  5. Step 5: Solve for x
    x = 3,255,054,790.86/64,731.42
  6. Step 6: Final answer
    x = 50,285.55

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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.