Home / 90,917.63-136,381.91-28,588.13

Finding the Fourth Proportional to 90,917.63, 136,381.91 and 28,588.13

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Solution

The fourth proportional to 90,917.63, 136,381.91 and 28,588.13 is: 42,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,917.63 : 136,381.91 = 28,588.13 : x
  2. Step 2: Convert to fraction form
    90,917.63/136,381.91 = 28,588.13/x
  3. Step 3: Cross multiply
    90,917.63x = 136,381.91 × 28,588.13
  4. Step 4: Simplify right side
    90,917.63x = 3,898,903,772.73
  5. Step 5: Solve for x
    x = 3,898,903,772.73/90,917.63
  6. Step 6: Final answer
    x = 42,883.91

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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.