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Finding the Fourth Proportional to 64,409.59, 88,886.13 and 38,912.41

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Solution

The fourth proportional to 64,409.59, 88,886.13 and 38,912.41 is: 53,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,409.59 : 88,886.13 = 38,912.41 : x
  2. Step 2: Convert to fraction form
    64,409.59/88,886.13 = 38,912.41/x
  3. Step 3: Cross multiply
    64,409.59x = 88,886.13 × 38,912.41
  4. Step 4: Simplify right side
    64,409.59x = 3,458,773,533.87
  5. Step 5: Solve for x
    x = 3,458,773,533.87/64,409.59
  6. Step 6: Final answer
    x = 53,699.67

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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.