Home / 90,640.32-135,934.56-46,239.36

Finding the Fourth Proportional to 90,640.32, 135,934.56 and 46,239.36

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Solution

The fourth proportional to 90,640.32, 135,934.56 and 46,239.36 is: 69,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.32 : 135,934.56 = 46,239.36 : x
  2. Step 2: Convert to fraction form
    90,640.32/135,934.56 = 46,239.36/x
  3. Step 3: Cross multiply
    90,640.32x = 135,934.56 × 46,239.36
  4. Step 4: Simplify right side
    90,640.32x = 6,285,527,056.28
  5. Step 5: Solve for x
    x = 6,285,527,056.28/90,640.32
  6. Step 6: Final answer
    x = 69,345.82

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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.