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Finding the Fourth Proportional to 64,699.61, 89,248.91 and 38,851.56

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Solution

The fourth proportional to 64,699.61, 89,248.91 and 38,851.56 is: 53,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,699.61 : 89,248.91 = 38,851.56 : x
  2. Step 2: Convert to fraction form
    64,699.61/89,248.91 = 38,851.56/x
  3. Step 3: Cross multiply
    64,699.61x = 89,248.91 × 38,851.56
  4. Step 4: Simplify right side
    64,699.61x = 3,467,459,187.54
  5. Step 5: Solve for x
    x = 3,467,459,187.54/64,699.61
  6. Step 6: Final answer
    x = 53,593.20

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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.