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Finding the Fourth Proportional to 73,007.76, 109,530.16 and 20,417.52

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Solution

The fourth proportional to 73,007.76, 109,530.16 and 20,417.52 is: 30,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,007.76 : 109,530.16 = 20,417.52 : x
  2. Step 2: Convert to fraction form
    73,007.76/109,530.16 = 20,417.52/x
  3. Step 3: Cross multiply
    73,007.76x = 109,530.16 × 20,417.52
  4. Step 4: Simplify right side
    73,007.76x = 2,236,334,232.40
  5. Step 5: Solve for x
    x = 2,236,334,232.40/73,007.76
  6. Step 6: Final answer
    x = 30,631.46

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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.