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Finding the Fourth Proportional to 73,088.96, 100,863.20 and 40,384.32

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Solution

The fourth proportional to 73,088.96, 100,863.20 and 40,384.32 is: 55,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,088.96 : 100,863.20 = 40,384.32 : x
  2. Step 2: Convert to fraction form
    73,088.96/100,863.20 = 40,384.32/x
  3. Step 3: Cross multiply
    73,088.96x = 100,863.20 × 40,384.32
  4. Step 4: Simplify right side
    73,088.96x = 4,073,291,745.02
  5. Step 5: Solve for x
    x = 4,073,291,745.02/73,088.96
  6. Step 6: Final answer
    x = 55,730.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.