Home / 85,395.15-117,749.46-55,140.74

Finding the Fourth Proportional to 85,395.15, 117,749.46 and 55,140.74

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Solution

The fourth proportional to 85,395.15, 117,749.46 and 55,140.74 is: 76,032.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,395.15 : 117,749.46 = 55,140.74 : x
  2. Step 2: Convert to fraction form
    85,395.15/117,749.46 = 55,140.74/x
  3. Step 3: Cross multiply
    85,395.15x = 117,749.46 × 55,140.74
  4. Step 4: Simplify right side
    85,395.15x = 6,492,792,359.00
  5. Step 5: Solve for x
    x = 6,492,792,359.00/85,395.15
  6. Step 6: Final answer
    x = 76,032.33

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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.