Home / 78,297.10-108,049.45-42,486.19

Finding the Fourth Proportional to 78,297.10, 108,049.45 and 42,486.19

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Solution

The fourth proportional to 78,297.10, 108,049.45 and 42,486.19 is: 58,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,297.10 : 108,049.45 = 42,486.19 : x
  2. Step 2: Convert to fraction form
    78,297.10/108,049.45 = 42,486.19/x
  3. Step 3: Cross multiply
    78,297.10x = 108,049.45 × 42,486.19
  4. Step 4: Simplify right side
    78,297.10x = 4,590,609,462.10
  5. Step 5: Solve for x
    x = 4,590,609,462.10/78,297.10
  6. Step 6: Final answer
    x = 58,630.64

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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.