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Finding the Fourth Proportional to 88,232.96, 121,776 and 64,438.40

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Solution

The fourth proportional to 88,232.96, 121,776 and 64,438.40 is: 88,935.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,232.96 : 121,776 = 64,438.40 : x
  2. Step 2: Convert to fraction form
    88,232.96/121,776 = 64,438.40/x
  3. Step 3: Cross multiply
    88,232.96x = 121,776 × 64,438.40
  4. Step 4: Simplify right side
    88,232.96x = 7,847,050,598.40
  5. Step 5: Solve for x
    x = 7,847,050,598.40/88,232.96
  6. Step 6: Final answer
    x = 88,935.59

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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.