Home / 87,915.60-121,323.90-47,629.26

Finding the Fourth Proportional to 87,915.60, 121,323.90 and 47,629.26

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Solution

The fourth proportional to 87,915.60, 121,323.90 and 47,629.26 is: 65,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.60 : 121,323.90 = 47,629.26 : x
  2. Step 2: Convert to fraction form
    87,915.60/121,323.90 = 47,629.26/x
  3. Step 3: Cross multiply
    87,915.60x = 121,323.90 × 47,629.26
  4. Step 4: Simplify right side
    87,915.60x = 5,778,567,577.31
  5. Step 5: Solve for x
    x = 5,778,567,577.31/87,915.60
  6. Step 6: Final answer
    x = 65,728.58

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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.