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Finding the Fourth Proportional to 112,646.61, 155,452.38 and 61,659.61

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Solution

The fourth proportional to 112,646.61, 155,452.38 and 61,659.61 is: 85,090.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,646.61 : 155,452.38 = 61,659.61 : x
  2. Step 2: Convert to fraction form
    112,646.61/155,452.38 = 61,659.61/x
  3. Step 3: Cross multiply
    112,646.61x = 155,452.38 × 61,659.61
  4. Step 4: Simplify right side
    112,646.61x = 9,585,133,124.37
  5. Step 5: Solve for x
    x = 9,585,133,124.37/112,646.61
  6. Step 6: Final answer
    x = 85,090.29

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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.