Home / 90,449.37-135,673.95-31,285.47

Finding the Fourth Proportional to 90,449.37, 135,673.95 and 31,285.47

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Solution

The fourth proportional to 90,449.37, 135,673.95 and 31,285.47 is: 46,928.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,449.37 : 135,673.95 = 31,285.47 : x
  2. Step 2: Convert to fraction form
    90,449.37/135,673.95 = 31,285.47/x
  3. Step 3: Cross multiply
    90,449.37x = 135,673.95 × 31,285.47
  4. Step 4: Simplify right side
    90,449.37x = 4,244,623,292.51
  5. Step 5: Solve for x
    x = 4,244,623,292.51/90,449.37
  6. Step 6: Final answer
    x = 46,928.17

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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.