Home / 90,671.34-136,007.32-31,507.52

Finding the Fourth Proportional to 90,671.34, 136,007.32 and 31,507.52

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Solution

The fourth proportional to 90,671.34, 136,007.32 and 31,507.52 is: 47,261.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,671.34 : 136,007.32 = 31,507.52 : x
  2. Step 2: Convert to fraction form
    90,671.34/136,007.32 = 31,507.52/x
  3. Step 3: Cross multiply
    90,671.34x = 136,007.32 × 31,507.52
  4. Step 4: Simplify right side
    90,671.34x = 4,285,253,616.30
  5. Step 5: Solve for x
    x = 4,285,253,616.30/90,671.34
  6. Step 6: Final answer
    x = 47,261.39

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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.