Home / 78,631.56-108,514.08-42,823.08

Finding the Fourth Proportional to 78,631.56, 108,514.08 and 42,823.08

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Solution

The fourth proportional to 78,631.56, 108,514.08 and 42,823.08 is: 59,097.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,631.56 : 108,514.08 = 42,823.08 : x
  2. Step 2: Convert to fraction form
    78,631.56/108,514.08 = 42,823.08/x
  3. Step 3: Cross multiply
    78,631.56x = 108,514.08 × 42,823.08
  4. Step 4: Simplify right side
    78,631.56x = 4,646,907,128.97
  5. Step 5: Solve for x
    x = 4,646,907,128.97/78,631.56
  6. Step 6: Final answer
    x = 59,097.23

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1.5x scale

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.