Home / 90,690.26-135,970.38-42,631.94

Finding the Fourth Proportional to 90,690.26, 135,970.38 and 42,631.94

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Solution

The fourth proportional to 90,690.26, 135,970.38 and 42,631.94 is: 63,917.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,690.26 : 135,970.38 = 42,631.94 : x
  2. Step 2: Convert to fraction form
    90,690.26/135,970.38 = 42,631.94/x
  3. Step 3: Cross multiply
    90,690.26x = 135,970.38 × 42,631.94
  4. Step 4: Simplify right side
    90,690.26x = 5,796,681,421.86
  5. Step 5: Solve for x
    x = 5,796,681,421.86/90,690.26
  6. Step 6: Final answer
    x = 63,917.36

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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.