Home / 77,420.27-116,130.15-21,260.43

Finding the Fourth Proportional to 77,420.27, 116,130.15 and 21,260.43

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Solution

The fourth proportional to 77,420.27, 116,130.15 and 21,260.43 is: 31,890.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,420.27 : 116,130.15 = 21,260.43 : x
  2. Step 2: Convert to fraction form
    77,420.27/116,130.15 = 21,260.43/x
  3. Step 3: Cross multiply
    77,420.27x = 116,130.15 × 21,260.43
  4. Step 4: Simplify right side
    77,420.27x = 2,468,976,924.96
  5. Step 5: Solve for x
    x = 2,468,976,924.96/77,420.27
  6. Step 6: Final answer
    x = 31,890.57

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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.