Home / 56,909.54-78,539.52-31,420.82

Finding the Fourth Proportional to 56,909.54, 78,539.52 and 31,420.82

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Solution

The fourth proportional to 56,909.54, 78,539.52 and 31,420.82 is: 43,363.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,909.54 : 78,539.52 = 31,420.82 : x
  2. Step 2: Convert to fraction form
    56,909.54/78,539.52 = 31,420.82/x
  3. Step 3: Cross multiply
    56,909.54x = 78,539.52 × 31,420.82
  4. Step 4: Simplify right side
    56,909.54x = 2,467,776,120.81
  5. Step 5: Solve for x
    x = 2,467,776,120.81/56,909.54
  6. Step 6: Final answer
    x = 43,363.14

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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.