Home / 90,871.08-136,296.89-31,707.87

Finding the Fourth Proportional to 90,871.08, 136,296.89 and 31,707.87

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Solution

The fourth proportional to 90,871.08, 136,296.89 and 31,707.87 is: 47,558.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.08 : 136,296.89 = 31,707.87 : x
  2. Step 2: Convert to fraction form
    90,871.08/136,296.89 = 31,707.87/x
  3. Step 3: Cross multiply
    90,871.08x = 136,296.89 × 31,707.87
  4. Step 4: Simplify right side
    90,871.08x = 4,321,683,518.78
  5. Step 5: Solve for x
    x = 4,321,683,518.78/90,871.08
  6. Step 6: Final answer
    x = 47,558.41

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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.