Home / 56,909.11-78,538.92-31,420.39

Finding the Fourth Proportional to 56,909.11, 78,538.92 and 31,420.39

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Solution

The fourth proportional to 56,909.11, 78,538.92 and 31,420.39 is: 43,362.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,909.11 : 78,538.92 = 31,420.39 : x
  2. Step 2: Convert to fraction form
    56,909.11/78,538.92 = 31,420.39/x
  3. Step 3: Cross multiply
    56,909.11x = 78,538.92 × 31,420.39
  4. Step 4: Simplify right side
    56,909.11x = 2,467,723,496.58
  5. Step 5: Solve for x
    x = 2,467,723,496.58/56,909.11
  6. Step 6: Final answer
    x = 43,362.54

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1.5x scale

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.