Home / 85,868.97-128,834.10-52,203.48

Finding the Fourth Proportional to 85,868.97, 128,834.10 and 52,203.48

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Solution

The fourth proportional to 85,868.97, 128,834.10 and 52,203.48 is: 78,323.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,868.97 : 128,834.10 = 52,203.48 : x
  2. Step 2: Convert to fraction form
    85,868.97/128,834.10 = 52,203.48/x
  3. Step 3: Cross multiply
    85,868.97x = 128,834.10 × 52,203.48
  4. Step 4: Simplify right side
    85,868.97x = 6,725,588,362.67
  5. Step 5: Solve for x
    x = 6,725,588,362.67/85,868.97
  6. Step 6: Final answer
    x = 78,323.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.