Home / 85,640.40-118,175.74-51,178.29

Finding the Fourth Proportional to 85,640.40, 118,175.74 and 51,178.29

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Solution

The fourth proportional to 85,640.40, 118,175.74 and 51,178.29 is: 70,621.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,640.40 : 118,175.74 = 51,178.29 : x
  2. Step 2: Convert to fraction form
    85,640.40/118,175.74 = 51,178.29/x
  3. Step 3: Cross multiply
    85,640.40x = 118,175.74 × 51,178.29
  4. Step 4: Simplify right side
    85,640.40x = 6,048,032,292.68
  5. Step 5: Solve for x
    x = 6,048,032,292.68/85,640.40
  6. Step 6: Final answer
    x = 70,621.26

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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.