Home / 90,743.06-125,228.13-54,939.62

Finding the Fourth Proportional to 90,743.06, 125,228.13 and 54,939.62

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Solution

The fourth proportional to 90,743.06, 125,228.13 and 54,939.62 is: 75,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,743.06 : 125,228.13 = 54,939.62 : x
  2. Step 2: Convert to fraction form
    90,743.06/125,228.13 = 54,939.62/x
  3. Step 3: Cross multiply
    90,743.06x = 125,228.13 × 54,939.62
  4. Step 4: Simplify right side
    90,743.06x = 6,879,985,875.51
  5. Step 5: Solve for x
    x = 6,879,985,875.51/90,743.06
  6. Step 6: Final answer
    x = 75,818.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.