Home / 101,948.72-140,689.19-56,630.91

Finding the Fourth Proportional to 101,948.72, 140,689.19 and 56,630.91

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Solution

The fourth proportional to 101,948.72, 140,689.19 and 56,630.91 is: 78,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,948.72 : 140,689.19 = 56,630.91 : x
  2. Step 2: Convert to fraction form
    101,948.72/140,689.19 = 56,630.91/x
  3. Step 3: Cross multiply
    101,948.72x = 140,689.19 × 56,630.91
  4. Step 4: Simplify right side
    101,948.72x = 7,967,356,573.71
  5. Step 5: Solve for x
    x = 7,967,356,573.71/101,948.72
  6. Step 6: Final answer
    x = 78,150.63

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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.