Home / 56,631.58-78,149.91-31,137.92

Finding the Fourth Proportional to 56,631.58, 78,149.91 and 31,137.92

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Solution

The fourth proportional to 56,631.58, 78,149.91 and 31,137.92 is: 42,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,631.58 : 78,149.91 = 31,137.92 : x
  2. Step 2: Convert to fraction form
    56,631.58/78,149.91 = 31,137.92/x
  3. Step 3: Cross multiply
    56,631.58x = 78,149.91 × 31,137.92
  4. Step 4: Simplify right side
    56,631.58x = 2,433,425,254.84
  5. Step 5: Solve for x
    x = 2,433,425,254.84/56,631.58
  6. Step 6: Final answer
    x = 42,969.41

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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.