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Finding the Fourth Proportional to 64,409.33, 88,885.80 and 38,912.15

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Solution

The fourth proportional to 64,409.33, 88,885.80 and 38,912.15 is: 53,699.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,409.33 : 88,885.80 = 38,912.15 : x
  2. Step 2: Convert to fraction form
    64,409.33/88,885.80 = 38,912.15/x
  3. Step 3: Cross multiply
    64,409.33x = 88,885.80 × 38,912.15
  4. Step 4: Simplify right side
    64,409.33x = 3,458,737,804.68
  5. Step 5: Solve for x
    x = 3,458,737,804.68/64,409.33
  6. Step 6: Final answer
    x = 53,699.33

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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.