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Finding the Fourth Proportional to 90,835.64, 125,375.43 and 70,377.22

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Solution

The fourth proportional to 90,835.64, 125,375.43 and 70,377.22 is: 97,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,835.64 : 125,375.43 = 70,377.22 : x
  2. Step 2: Convert to fraction form
    90,835.64/125,375.43 = 70,377.22/x
  3. Step 3: Cross multiply
    90,835.64x = 125,375.43 × 70,377.22
  4. Step 4: Simplify right side
    90,835.64x = 8,823,574,112.51
  5. Step 5: Solve for x
    x = 8,823,574,112.51/90,835.64
  6. Step 6: Final answer
    x = 97,137.80

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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.