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Finding the Fourth Proportional to 89,742.40, 134,613.60 and 73,339.90

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Solution

The fourth proportional to 89,742.40, 134,613.60 and 73,339.90 is: 110,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,742.40 : 134,613.60 = 73,339.90 : x
  2. Step 2: Convert to fraction form
    89,742.40/134,613.60 = 73,339.90/x
  3. Step 3: Cross multiply
    89,742.40x = 134,613.60 × 73,339.90
  4. Step 4: Simplify right side
    89,742.40x = 9,872,547,962.64
  5. Step 5: Solve for x
    x = 9,872,547,962.64/89,742.40
  6. Step 6: Final answer
    x = 110,009.85

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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.