Home / 90,215.51-135,332.37-31,043.39

Finding the Fourth Proportional to 90,215.51, 135,332.37 and 31,043.39

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Solution

The fourth proportional to 90,215.51, 135,332.37 and 31,043.39 is: 46,568.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,215.51 : 135,332.37 = 31,043.39 : x
  2. Step 2: Convert to fraction form
    90,215.51/135,332.37 = 31,043.39/x
  3. Step 3: Cross multiply
    90,215.51x = 135,332.37 × 31,043.39
  4. Step 4: Simplify right side
    90,215.51x = 4,201,174,864.87
  5. Step 5: Solve for x
    x = 4,201,174,864.87/90,215.51
  6. Step 6: Final answer
    x = 46,568.21

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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.