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Finding the Fourth Proportional to 73,134.40, 109,701.60 and 28,746.40

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Solution

The fourth proportional to 73,134.40, 109,701.60 and 28,746.40 is: 43,119.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,134.40 : 109,701.60 = 28,746.40 : x
  2. Step 2: Convert to fraction form
    73,134.40/109,701.60 = 28,746.40/x
  3. Step 3: Cross multiply
    73,134.40x = 109,701.60 × 28,746.40
  4. Step 4: Simplify right side
    73,134.40x = 3,153,526,074.24
  5. Step 5: Solve for x
    x = 3,153,526,074.24/73,134.40
  6. Step 6: Final answer
    x = 43,119.60

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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.