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Finding the Fourth Proportional to 90,212.40, 124,490.04 and 49,927.86

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Solution

The fourth proportional to 90,212.40, 124,490.04 and 49,927.86 is: 68,898.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,212.40 : 124,490.04 = 49,927.86 : x
  2. Step 2: Convert to fraction form
    90,212.40/124,490.04 = 49,927.86/x
  3. Step 3: Cross multiply
    90,212.40x = 124,490.04 × 49,927.86
  4. Step 4: Simplify right side
    90,212.40x = 6,215,521,288.51
  5. Step 5: Solve for x
    x = 6,215,521,288.51/90,212.40
  6. Step 6: Final answer
    x = 68,898.75

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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.