Home / 90,896.31-136,351.76-31,730.67

Finding the Fourth Proportional to 90,896.31, 136,351.76 and 31,730.67

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Solution

The fourth proportional to 90,896.31, 136,351.76 and 31,730.67 is: 47,598.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,896.31 : 136,351.76 = 31,730.67 : x
  2. Step 2: Convert to fraction form
    90,896.31/136,351.76 = 31,730.67/x
  3. Step 3: Cross multiply
    90,896.31x = 136,351.76 × 31,730.67
  4. Step 4: Simplify right side
    90,896.31x = 4,326,532,541.83
  5. Step 5: Solve for x
    x = 4,326,532,541.83/90,896.31
  6. Step 6: Final answer
    x = 47,598.55

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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.