Home / 56,985.49-78,639.45-31,493.56

Finding the Fourth Proportional to 56,985.49, 78,639.45 and 31,493.56

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Solution

The fourth proportional to 56,985.49, 78,639.45 and 31,493.56 is: 43,460.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.49 : 78,639.45 = 31,493.56 : x
  2. Step 2: Convert to fraction form
    56,985.49/78,639.45 = 31,493.56/x
  3. Step 3: Cross multiply
    56,985.49x = 78,639.45 × 31,493.56
  4. Step 4: Simplify right side
    56,985.49x = 2,476,636,236.94
  5. Step 5: Solve for x
    x = 2,476,636,236.94/56,985.49
  6. Step 6: Final answer
    x = 43,460.82

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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.