Home / 90,964.48-136,461.32-38,381.72

Finding the Fourth Proportional to 90,964.48, 136,461.32 and 38,381.72

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Solution

The fourth proportional to 90,964.48, 136,461.32 and 38,381.72 is: 57,578.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,964.48 : 136,461.32 = 38,381.72 : x
  2. Step 2: Convert to fraction form
    90,964.48/136,461.32 = 38,381.72/x
  3. Step 3: Cross multiply
    90,964.48x = 136,461.32 × 38,381.72
  4. Step 4: Simplify right side
    90,964.48x = 5,237,620,175.07
  5. Step 5: Solve for x
    x = 5,237,620,175.07/90,964.48
  6. Step 6: Final answer
    x = 57,578.74

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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.