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Finding the Fourth Proportional to 77,851.68, 116,686.80 and 35,736.21

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Solution

The fourth proportional to 77,851.68, 116,686.80 and 35,736.21 is: 53,562.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,851.68 : 116,686.80 = 35,736.21 : x
  2. Step 2: Convert to fraction form
    77,851.68/116,686.80 = 35,736.21/x
  3. Step 3: Cross multiply
    77,851.68x = 116,686.80 × 35,736.21
  4. Step 4: Simplify right side
    77,851.68x = 4,169,944,191.57
  5. Step 5: Solve for x
    x = 4,169,944,191.57/77,851.68
  6. Step 6: Final answer
    x = 53,562.67

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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.