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Finding the Fourth Proportional to 64,670.88, 89,209.32 and 38,822.76

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Solution

The fourth proportional to 64,670.88, 89,209.32 and 38,822.76 is: 53,553.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,670.88 : 89,209.32 = 38,822.76 : x
  2. Step 2: Convert to fraction form
    64,670.88/89,209.32 = 38,822.76/x
  3. Step 3: Cross multiply
    64,670.88x = 89,209.32 × 38,822.76
  4. Step 4: Simplify right side
    64,670.88x = 3,463,352,020.12
  5. Step 5: Solve for x
    x = 3,463,352,020.12/64,670.88
  6. Step 6: Final answer
    x = 53,553.50

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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.