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Finding the Fourth Proportional to 73,815.40, 110,723.10 and 70,899.40

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Solution

The fourth proportional to 73,815.40, 110,723.10 and 70,899.40 is: 106,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,815.40 : 110,723.10 = 70,899.40 : x
  2. Step 2: Convert to fraction form
    73,815.40/110,723.10 = 70,899.40/x
  3. Step 3: Cross multiply
    73,815.40x = 110,723.10 × 70,899.40
  4. Step 4: Simplify right side
    73,815.40x = 7,850,201,356.14
  5. Step 5: Solve for x
    x = 7,850,201,356.14/73,815.40
  6. Step 6: Final answer
    x = 106,349.10

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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.