Home / 112,622.57-155,419.11-61,635.32

Finding the Fourth Proportional to 112,622.57, 155,419.11 and 61,635.32

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Solution

The fourth proportional to 112,622.57, 155,419.11 and 61,635.32 is: 85,056.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,622.57 : 155,419.11 = 61,635.32 : x
  2. Step 2: Convert to fraction form
    112,622.57/155,419.11 = 61,635.32/x
  3. Step 3: Cross multiply
    112,622.57x = 155,419.11 × 61,635.32
  4. Step 4: Simplify right side
    112,622.57x = 9,579,305,801.87
  5. Step 5: Solve for x
    x = 9,579,305,801.87/112,622.57
  6. Step 6: Final answer
    x = 85,056.72

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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.