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Finding the Fourth Proportional to 64,403.84, 88,856.06 and 38,900.68

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Solution

The fourth proportional to 64,403.84, 88,856.06 and 38,900.68 is: 53,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,403.84 : 88,856.06 = 38,900.68 : x
  2. Step 2: Convert to fraction form
    64,403.84/88,856.06 = 38,900.68/x
  3. Step 3: Cross multiply
    64,403.84x = 88,856.06 × 38,900.68
  4. Step 4: Simplify right side
    64,403.84x = 3,456,560,739.48
  5. Step 5: Solve for x
    x = 3,456,560,739.48/64,403.84
  6. Step 6: Final answer
    x = 53,670.10

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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.