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Finding the Fourth Proportional to 73,690.40, 110,300.40 and 58,138.40

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Solution

The fourth proportional to 73,690.40, 110,300.40 and 58,138.40 is: 87,022.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,690.40 : 110,300.40 = 58,138.40 : x
  2. Step 2: Convert to fraction form
    73,690.40/110,300.40 = 58,138.40/x
  3. Step 3: Cross multiply
    73,690.40x = 110,300.40 × 58,138.40
  4. Step 4: Simplify right side
    73,690.40x = 6,412,688,775.36
  5. Step 5: Solve for x
    x = 6,412,688,775.36/73,690.40
  6. Step 6: Final answer
    x = 87,022.04

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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.