Home / 90,915.06-125,501.49-61,124.34

Finding the Fourth Proportional to 90,915.06, 125,501.49 and 61,124.34

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Solution

The fourth proportional to 90,915.06, 125,501.49 and 61,124.34 is: 84,377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,915.06 : 125,501.49 = 61,124.34 : x
  2. Step 2: Convert to fraction form
    90,915.06/125,501.49 = 61,124.34/x
  3. Step 3: Cross multiply
    90,915.06x = 125,501.49 × 61,124.34
  4. Step 4: Simplify right side
    90,915.06x = 7,671,195,745.27
  5. Step 5: Solve for x
    x = 7,671,195,745.27/90,915.06
  6. Step 6: Final answer
    x = 84,377.61

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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.