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Finding the Fourth Proportional to 73,009.20, 109,492.20 and 28,610.40

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Solution

The fourth proportional to 73,009.20, 109,492.20 and 28,610.40 is: 42,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,009.20 : 109,492.20 = 28,610.40 : x
  2. Step 2: Convert to fraction form
    73,009.20/109,492.20 = 28,610.40/x
  3. Step 3: Cross multiply
    73,009.20x = 109,492.20 × 28,610.40
  4. Step 4: Simplify right side
    73,009.20x = 3,132,615,638.88
  5. Step 5: Solve for x
    x = 3,132,615,638.88/73,009.20
  6. Step 6: Final answer
    x = 42,907.14

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1.5x scale

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.