Home / 89,354.18-133,965.66-42,639.86

Finding the Fourth Proportional to 89,354.18, 133,965.66 and 42,639.86

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Solution

The fourth proportional to 89,354.18, 133,965.66 and 42,639.86 is: 63,928.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,354.18 : 133,965.66 = 42,639.86 : x
  2. Step 2: Convert to fraction form
    89,354.18/133,965.66 = 42,639.86/x
  3. Step 3: Cross multiply
    89,354.18x = 133,965.66 × 42,639.86
  4. Step 4: Simplify right side
    89,354.18x = 5,712,276,987.21
  5. Step 5: Solve for x
    x = 5,712,276,987.21/89,354.18
  6. Step 6: Final answer
    x = 63,928.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.