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Finding the Fourth Proportional to 73,433.92, 109,539.20 and 66,347.20

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Solution

The fourth proportional to 73,433.92, 109,539.20 and 66,347.20 is: 98,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,433.92 : 109,539.20 = 66,347.20 : x
  2. Step 2: Convert to fraction form
    73,433.92/109,539.20 = 66,347.20/x
  3. Step 3: Cross multiply
    73,433.92x = 109,539.20 × 66,347.20
  4. Step 4: Simplify right side
    73,433.92x = 7,267,619,210.24
  5. Step 5: Solve for x
    x = 7,267,619,210.24/73,433.92
  6. Step 6: Final answer
    x = 98,968.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.