Home / 90,739.04-136,099.92-31,572.32

Finding the Fourth Proportional to 90,739.04, 136,099.92 and 31,572.32

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Solution

The fourth proportional to 90,739.04, 136,099.92 and 31,572.32 is: 47,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.04 : 136,099.92 = 31,572.32 : x
  2. Step 2: Convert to fraction form
    90,739.04/136,099.92 = 31,572.32/x
  3. Step 3: Cross multiply
    90,739.04x = 136,099.92 × 31,572.32
  4. Step 4: Simplify right side
    90,739.04x = 4,296,990,226.21
  5. Step 5: Solve for x
    x = 4,296,990,226.21/90,739.04
  6. Step 6: Final answer
    x = 47,355.47

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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.