Home / 78,554.13-108,405.80-42,744.16

Finding the Fourth Proportional to 78,554.13, 108,405.80 and 42,744.16

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Solution

The fourth proportional to 78,554.13, 108,405.80 and 42,744.16 is: 58,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,554.13 : 108,405.80 = 42,744.16 : x
  2. Step 2: Convert to fraction form
    78,554.13/108,405.80 = 42,744.16/x
  3. Step 3: Cross multiply
    78,554.13x = 108,405.80 × 42,744.16
  4. Step 4: Simplify right side
    78,554.13x = 4,633,714,860.13
  5. Step 5: Solve for x
    x = 4,633,714,860.13/78,554.13
  6. Step 6: Final answer
    x = 58,987.54

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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.