Home / 90,368.19-135,567.81-31,189.86

Finding the Fourth Proportional to 90,368.19, 135,567.81 and 31,189.86

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Solution

The fourth proportional to 90,368.19, 135,567.81 and 31,189.86 is: 46,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,368.19 : 135,567.81 = 31,189.86 : x
  2. Step 2: Convert to fraction form
    90,368.19/135,567.81 = 31,189.86/x
  3. Step 3: Cross multiply
    90,368.19x = 135,567.81 × 31,189.86
  4. Step 4: Simplify right side
    90,368.19x = 4,228,341,014.41
  5. Step 5: Solve for x
    x = 4,228,341,014.41/90,368.19
  6. Step 6: Final answer
    x = 46,790.15

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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.