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Finding the Fourth Proportional to 73,243.20, 109,994.40 and 56,643.60

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Solution

The fourth proportional to 73,243.20, 109,994.40 and 56,643.60 is: 85,065.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,243.20 : 109,994.40 = 56,643.60 : x
  2. Step 2: Convert to fraction form
    73,243.20/109,994.40 = 56,643.60/x
  3. Step 3: Cross multiply
    73,243.20x = 109,994.40 × 56,643.60
  4. Step 4: Simplify right side
    73,243.20x = 6,230,478,795.84
  5. Step 5: Solve for x
    x = 6,230,478,795.84/73,243.20
  6. Step 6: Final answer
    x = 85,065.63

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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.