Home / 56,909.45-78,534.59-31,415.81

Finding the Fourth Proportional to 56,909.45, 78,534.59 and 31,415.81

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Solution

The fourth proportional to 56,909.45, 78,534.59 and 31,415.81 is: 43,353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,909.45 : 78,534.59 = 31,415.81 : x
  2. Step 2: Convert to fraction form
    56,909.45/78,534.59 = 31,415.81/x
  3. Step 3: Cross multiply
    56,909.45x = 78,534.59 × 31,415.81
  4. Step 4: Simplify right side
    56,909.45x = 2,467,227,208.12
  5. Step 5: Solve for x
    x = 2,467,227,208.12/56,909.45
  6. Step 6: Final answer
    x = 43,353.56

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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.