Home / 90,749.04-136,138.08-31,601.52

Finding the Fourth Proportional to 90,749.04, 136,138.08 and 31,601.52

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Solution

The fourth proportional to 90,749.04, 136,138.08 and 31,601.52 is: 47,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749.04 : 136,138.08 = 31,601.52 : x
  2. Step 2: Convert to fraction form
    90,749.04/136,138.08 = 31,601.52/x
  3. Step 3: Cross multiply
    90,749.04x = 136,138.08 × 31,601.52
  4. Step 4: Simplify right side
    90,749.04x = 4,302,170,257.88
  5. Step 5: Solve for x
    x = 4,302,170,257.88/90,749.04
  6. Step 6: Final answer
    x = 47,407.34

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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.