Home / 90,873.18-136,332.54-31,709.34

Finding the Fourth Proportional to 90,873.18, 136,332.54 and 31,709.34

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Solution

The fourth proportional to 90,873.18, 136,332.54 and 31,709.34 is: 47,571.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.18 : 136,332.54 = 31,709.34 : x
  2. Step 2: Convert to fraction form
    90,873.18/136,332.54 = 31,709.34/x
  3. Step 3: Cross multiply
    90,873.18x = 136,332.54 × 31,709.34
  4. Step 4: Simplify right side
    90,873.18x = 4,323,014,863.92
  5. Step 5: Solve for x
    x = 4,323,014,863.92/90,873.18
  6. Step 6: Final answer
    x = 47,571.96

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1.5x scale

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.