Home / 75,326.66-103,911.20-57,390.53

Finding the Fourth Proportional to 75,326.66, 103,911.20 and 57,390.53

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Solution

The fourth proportional to 75,326.66, 103,911.20 and 57,390.53 is: 79,168.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,326.66 : 103,911.20 = 57,390.53 : x
  2. Step 2: Convert to fraction form
    75,326.66/103,911.20 = 57,390.53/x
  3. Step 3: Cross multiply
    75,326.66x = 103,911.20 × 57,390.53
  4. Step 4: Simplify right side
    75,326.66x = 5,963,518,572.46
  5. Step 5: Solve for x
    x = 5,963,518,572.46/75,326.66
  6. Step 6: Final answer
    x = 79,168.77

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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.