Home / 56,815.48-78,401.84-31,320.53

Finding the Fourth Proportional to 56,815.48, 78,401.84 and 31,320.53

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Solution

The fourth proportional to 56,815.48, 78,401.84 and 31,320.53 is: 43,220.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,815.48 : 78,401.84 = 31,320.53 : x
  2. Step 2: Convert to fraction form
    56,815.48/78,401.84 = 31,320.53/x
  3. Step 3: Cross multiply
    56,815.48x = 78,401.84 × 31,320.53
  4. Step 4: Simplify right side
    56,815.48x = 2,455,586,927.17
  5. Step 5: Solve for x
    x = 2,455,586,927.17/56,815.48
  6. Step 6: Final answer
    x = 43,220.38

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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.