Home / 90,673.60-136,010.30-31,509.28

Finding the Fourth Proportional to 90,673.60, 136,010.30 and 31,509.28

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Solution

The fourth proportional to 90,673.60, 136,010.30 and 31,509.28 is: 47,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,673.60 : 136,010.30 = 31,509.28 : x
  2. Step 2: Convert to fraction form
    90,673.60/136,010.30 = 31,509.28/x
  3. Step 3: Cross multiply
    90,673.60x = 136,010.30 × 31,509.28
  4. Step 4: Simplify right side
    90,673.60x = 4,285,585,787.99
  5. Step 5: Solve for x
    x = 4,285,585,787.99/90,673.60
  6. Step 6: Final answer
    x = 47,263.88

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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.