Home / 56,635.68-78,155.04-31,486.80

Finding the Fourth Proportional to 56,635.68, 78,155.04 and 31,486.80

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Solution

The fourth proportional to 56,635.68, 78,155.04 and 31,486.80 is: 43,450.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,635.68 : 78,155.04 = 31,486.80 : x
  2. Step 2: Convert to fraction form
    56,635.68/78,155.04 = 31,486.80/x
  3. Step 3: Cross multiply
    56,635.68x = 78,155.04 × 31,486.80
  4. Step 4: Simplify right side
    56,635.68x = 2,460,852,113.47
  5. Step 5: Solve for x
    x = 2,460,852,113.47/56,635.68
  6. Step 6: Final answer
    x = 43,450.56

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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.