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Finding the Fourth Proportional to 64,400.40, 88,860.24 and 38,901.60

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Solution

The fourth proportional to 64,400.40, 88,860.24 and 38,901.60 is: 53,676.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,400.40 : 88,860.24 = 38,901.60 : x
  2. Step 2: Convert to fraction form
    64,400.40/88,860.24 = 38,901.60/x
  3. Step 3: Cross multiply
    64,400.40x = 88,860.24 × 38,901.60
  4. Step 4: Simplify right side
    64,400.40x = 3,456,805,512.38
  5. Step 5: Solve for x
    x = 3,456,805,512.38/64,400.40
  6. Step 6: Final answer
    x = 53,676.77

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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.