Home / 85,130.53-117,480.12-49,341.30

Finding the Fourth Proportional to 85,130.53, 117,480.12 and 49,341.30

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Solution

The fourth proportional to 85,130.53, 117,480.12 and 49,341.30 is: 68,090.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130.53 : 117,480.12 = 49,341.30 : x
  2. Step 2: Convert to fraction form
    85,130.53/117,480.12 = 49,341.30/x
  3. Step 3: Cross multiply
    85,130.53x = 117,480.12 × 49,341.30
  4. Step 4: Simplify right side
    85,130.53x = 5,796,621,134.20
  5. Step 5: Solve for x
    x = 5,796,621,134.20/85,130.53
  6. Step 6: Final answer
    x = 68,090.98

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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.