Home / 77,701.12-116,301-40,209.60

Finding the Fourth Proportional to 77,701.12, 116,301 and 40,209.60

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Solution

The fourth proportional to 77,701.12, 116,301 and 40,209.60 is: 60,184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,701.12 : 116,301 = 40,209.60 : x
  2. Step 2: Convert to fraction form
    77,701.12/116,301 = 40,209.60/x
  3. Step 3: Cross multiply
    77,701.12x = 116,301 × 40,209.60
  4. Step 4: Simplify right side
    77,701.12x = 4,676,416,689.60
  5. Step 5: Solve for x
    x = 4,676,416,689.60/77,701.12
  6. Step 6: Final answer
    x = 60,184.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.