Home / 56,705.76-78,240.58-47,665.49

Finding the Fourth Proportional to 56,705.76, 78,240.58 and 47,665.49

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Solution

The fourth proportional to 56,705.76, 78,240.58 and 47,665.49 is: 65,767.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,705.76 : 78,240.58 = 47,665.49 : x
  2. Step 2: Convert to fraction form
    56,705.76/78,240.58 = 47,665.49/x
  3. Step 3: Cross multiply
    56,705.76x = 78,240.58 × 47,665.49
  4. Step 4: Simplify right side
    56,705.76x = 3,729,375,073.22
  5. Step 5: Solve for x
    x = 3,729,375,073.22/56,705.76
  6. Step 6: Final answer
    x = 65,767.13

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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.