Home / 87,915.41-121,316.04-49,678.28

Finding the Fourth Proportional to 87,915.41, 121,316.04 and 49,678.28

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Solution

The fourth proportional to 87,915.41, 121,316.04 and 49,678.28 is: 68,551.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.41 : 121,316.04 = 49,678.28 : x
  2. Step 2: Convert to fraction form
    87,915.41/121,316.04 = 49,678.28/x
  3. Step 3: Cross multiply
    87,915.41x = 121,316.04 × 49,678.28
  4. Step 4: Simplify right side
    87,915.41x = 6,026,772,203.61
  5. Step 5: Solve for x
    x = 6,026,772,203.61/87,915.41
  6. Step 6: Final answer
    x = 68,551.94

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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.