Home / 92,987.18-128,321.78-52,708.56

Finding the Fourth Proportional to 92,987.18, 128,321.78 and 52,708.56

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Solution

The fourth proportional to 92,987.18, 128,321.78 and 52,708.56 is: 72,737.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,987.18 : 128,321.78 = 52,708.56 : x
  2. Step 2: Convert to fraction form
    92,987.18/128,321.78 = 52,708.56/x
  3. Step 3: Cross multiply
    92,987.18x = 128,321.78 × 52,708.56
  4. Step 4: Simplify right side
    92,987.18x = 6,763,656,240.44
  5. Step 5: Solve for x
    x = 6,763,656,240.44/92,987.18
  6. Step 6: Final answer
    x = 72,737.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.