Home / 75,061.24-103,669.55-51,146.40

Finding the Fourth Proportional to 75,061.24, 103,669.55 and 51,146.40

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Solution

The fourth proportional to 75,061.24, 103,669.55 and 51,146.40 is: 70,639.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,061.24 : 103,669.55 = 51,146.40 : x
  2. Step 2: Convert to fraction form
    75,061.24/103,669.55 = 51,146.40/x
  3. Step 3: Cross multiply
    75,061.24x = 103,669.55 × 51,146.40
  4. Step 4: Simplify right side
    75,061.24x = 5,302,324,272.12
  5. Step 5: Solve for x
    x = 5,302,324,272.12/75,061.24
  6. Step 6: Final answer
    x = 70,639.98

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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.