Home / 56,628.84-78,148.70-31,136.31

Finding the Fourth Proportional to 56,628.84, 78,148.70 and 31,136.31

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Solution

The fourth proportional to 56,628.84, 78,148.70 and 31,136.31 is: 42,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,628.84 : 78,148.70 = 31,136.31 : x
  2. Step 2: Convert to fraction form
    56,628.84/78,148.70 = 31,136.31/x
  3. Step 3: Cross multiply
    56,628.84x = 78,148.70 × 31,136.31
  4. Step 4: Simplify right side
    56,628.84x = 2,433,261,993.62
  5. Step 5: Solve for x
    x = 2,433,261,993.62/56,628.84
  6. Step 6: Final answer
    x = 42,968.60

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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.