Home / 56,688.75-78,230.48-31,538.25

Finding the Fourth Proportional to 56,688.75, 78,230.48 and 31,538.25

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Solution

The fourth proportional to 56,688.75, 78,230.48 and 31,538.25 is: 43,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,688.75 : 78,230.48 = 31,538.25 : x
  2. Step 2: Convert to fraction form
    56,688.75/78,230.48 = 31,538.25/x
  3. Step 3: Cross multiply
    56,688.75x = 78,230.48 × 31,538.25
  4. Step 4: Simplify right side
    56,688.75x = 2,467,252,278.17
  5. Step 5: Solve for x
    x = 2,467,252,278.17/56,688.75
  6. Step 6: Final answer
    x = 43,522.79

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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.