Home / 77,128.15-115,669.53-34,983.85

Finding the Fourth Proportional to 77,128.15, 115,669.53 and 34,983.85

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Solution

The fourth proportional to 77,128.15, 115,669.53 and 34,983.85 is: 52,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.15 : 115,669.53 = 34,983.85 : x
  2. Step 2: Convert to fraction form
    77,128.15/115,669.53 = 34,983.85/x
  3. Step 3: Cross multiply
    77,128.15x = 115,669.53 × 34,983.85
  4. Step 4: Simplify right side
    77,128.15x = 4,046,565,487.09
  5. Step 5: Solve for x
    x = 4,046,565,487.09/77,128.15
  6. Step 6: Final answer
    x = 52,465.48

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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.