Home / 90,427.66-135,671.86-63,438.12

Finding the Fourth Proportional to 90,427.66, 135,671.86 and 63,438.12

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Solution

The fourth proportional to 90,427.66, 135,671.86 and 63,438.12 is: 95,178.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,427.66 : 135,671.86 = 63,438.12 : x
  2. Step 2: Convert to fraction form
    90,427.66/135,671.86 = 63,438.12/x
  3. Step 3: Cross multiply
    90,427.66x = 135,671.86 × 63,438.12
  4. Step 4: Simplify right side
    90,427.66x = 8,606,767,814.60
  5. Step 5: Solve for x
    x = 8,606,767,814.60/90,427.66
  6. Step 6: Final answer
    x = 95,178.49

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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.