Home / 90,182.40-135,240.48-31,001.28

Finding the Fourth Proportional to 90,182.40, 135,240.48 and 31,001.28

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Solution

The fourth proportional to 90,182.40, 135,240.48 and 31,001.28 is: 46,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,182.40 : 135,240.48 = 31,001.28 : x
  2. Step 2: Convert to fraction form
    90,182.40/135,240.48 = 31,001.28/x
  3. Step 3: Cross multiply
    90,182.40x = 135,240.48 × 31,001.28
  4. Step 4: Simplify right side
    90,182.40x = 4,192,627,987.81
  5. Step 5: Solve for x
    x = 4,192,627,987.81/90,182.40
  6. Step 6: Final answer
    x = 46,490.53

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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.