Home / 78,322.63-108,085.35-42,512.65

Finding the Fourth Proportional to 78,322.63, 108,085.35 and 42,512.65

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Solution

The fourth proportional to 78,322.63, 108,085.35 and 42,512.65 is: 58,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.63 : 108,085.35 = 42,512.65 : x
  2. Step 2: Convert to fraction form
    78,322.63/108,085.35 = 42,512.65/x
  3. Step 3: Cross multiply
    78,322.63x = 108,085.35 × 42,512.65
  4. Step 4: Simplify right side
    78,322.63x = 4,594,994,654.68
  5. Step 5: Solve for x
    x = 4,594,994,654.68/78,322.63
  6. Step 6: Final answer
    x = 58,667.52

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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.