Home / 77,020-115,513.40-44,977.68

Finding the Fourth Proportional to 77,020, 115,513.40 and 44,977.68

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Solution

The fourth proportional to 77,020, 115,513.40 and 44,977.68 is: 67,456.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,020 : 115,513.40 = 44,977.68 : x
  2. Step 2: Convert to fraction form
    77,020/115,513.40 = 44,977.68/x
  3. Step 3: Cross multiply
    77,020x = 115,513.40 × 44,977.68
  4. Step 4: Simplify right side
    77,020x = 5,195,524,740.91
  5. Step 5: Solve for x
    x = 5,195,524,740.91/77,020
  6. Step 6: Final answer
    x = 67,456.83

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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.