Home / 85,120.79-117,462.16-48,820.35

Finding the Fourth Proportional to 85,120.79, 117,462.16 and 48,820.35

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Solution

The fourth proportional to 85,120.79, 117,462.16 and 48,820.35 is: 67,369.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,120.79 : 117,462.16 = 48,820.35 : x
  2. Step 2: Convert to fraction form
    85,120.79/117,462.16 = 48,820.35/x
  3. Step 3: Cross multiply
    85,120.79x = 117,462.16 × 48,820.35
  4. Step 4: Simplify right side
    85,120.79x = 5,734,544,264.46
  5. Step 5: Solve for x
    x = 5,734,544,264.46/85,120.79
  6. Step 6: Final answer
    x = 67,369.49

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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.