Home / 87,915.94-121,283.78-52,085.58

Finding the Fourth Proportional to 87,915.94, 121,283.78 and 52,085.58

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Solution

The fourth proportional to 87,915.94, 121,283.78 and 52,085.58 is: 71,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.94 : 121,283.78 = 52,085.58 : x
  2. Step 2: Convert to fraction form
    87,915.94/121,283.78 = 52,085.58/x
  3. Step 3: Cross multiply
    87,915.94x = 121,283.78 × 52,085.58
  4. Step 4: Simplify right side
    87,915.94x = 6,317,136,025.89
  5. Step 5: Solve for x
    x = 6,317,136,025.89/87,915.94
  6. Step 6: Final answer
    x = 71,854.27

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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.