Home / 85,114.48-117,404.76-61,203.28

Finding the Fourth Proportional to 85,114.48, 117,404.76 and 61,203.28

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Solution

The fourth proportional to 85,114.48, 117,404.76 and 61,203.28 is: 84,422.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,114.48 : 117,404.76 = 61,203.28 : x
  2. Step 2: Convert to fraction form
    85,114.48/117,404.76 = 61,203.28/x
  3. Step 3: Cross multiply
    85,114.48x = 117,404.76 × 61,203.28
  4. Step 4: Simplify right side
    85,114.48x = 7,185,556,399.61
  5. Step 5: Solve for x
    x = 7,185,556,399.61/85,114.48
  6. Step 6: Final answer
    x = 84,422.26

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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.