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Finding the Fourth Proportional to 112,751.44, 155,595.30 and 61,763.77

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Solution

The fourth proportional to 112,751.44, 155,595.30 and 61,763.77 is: 85,233.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,751.44 : 155,595.30 = 61,763.77 : x
  2. Step 2: Convert to fraction form
    112,751.44/155,595.30 = 61,763.77/x
  3. Step 3: Cross multiply
    112,751.44x = 155,595.30 × 61,763.77
  4. Step 4: Simplify right side
    112,751.44x = 9,610,152,322.28
  5. Step 5: Solve for x
    x = 9,610,152,322.28/112,751.44
  6. Step 6: Final answer
    x = 85,233.08

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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.