Home / 87,915.54-121,316.22-49,678.40

Finding the Fourth Proportional to 87,915.54, 121,316.22 and 49,678.40

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Solution

The fourth proportional to 87,915.54, 121,316.22 and 49,678.40 is: 68,552.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.54 : 121,316.22 = 49,678.40 : x
  2. Step 2: Convert to fraction form
    87,915.54/121,316.22 = 49,678.40/x
  3. Step 3: Cross multiply
    87,915.54x = 121,316.22 × 49,678.40
  4. Step 4: Simplify right side
    87,915.54x = 6,026,795,703.65
  5. Step 5: Solve for x
    x = 6,026,795,703.65/87,915.54
  6. Step 6: Final answer
    x = 68,552.11

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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.