Home / 77,391.22-116,077.47-21,235.90

Finding the Fourth Proportional to 77,391.22, 116,077.47 and 21,235.90

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Solution

The fourth proportional to 77,391.22, 116,077.47 and 21,235.90 is: 31,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,391.22 : 116,077.47 = 21,235.90 : x
  2. Step 2: Convert to fraction form
    77,391.22/116,077.47 = 21,235.90/x
  3. Step 3: Cross multiply
    77,391.22x = 116,077.47 × 21,235.90
  4. Step 4: Simplify right side
    77,391.22x = 2,465,009,545.17
  5. Step 5: Solve for x
    x = 2,465,009,545.17/77,391.22
  6. Step 6: Final answer
    x = 31,851.28

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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.