Home / 85,135.16-117,501.09-49,347.20

Finding the Fourth Proportional to 85,135.16, 117,501.09 and 49,347.20

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Solution

The fourth proportional to 85,135.16, 117,501.09 and 49,347.20 is: 68,107.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,135.16 : 117,501.09 = 49,347.20 : x
  2. Step 2: Convert to fraction form
    85,135.16/117,501.09 = 49,347.20/x
  3. Step 3: Cross multiply
    85,135.16x = 117,501.09 × 49,347.20
  4. Step 4: Simplify right side
    85,135.16x = 5,798,349,788.45
  5. Step 5: Solve for x
    x = 5,798,349,788.45/85,135.16
  6. Step 6: Final answer
    x = 68,107.58

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1.5x scale

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.