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Finding the Fourth Proportional to 61,480.30, 92,220.45 and 57,786.70

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Solution

The fourth proportional to 61,480.30, 92,220.45 and 57,786.70 is: 86,680.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,480.30 : 92,220.45 = 57,786.70 : x
  2. Step 2: Convert to fraction form
    61,480.30/92,220.45 = 57,786.70/x
  3. Step 3: Cross multiply
    61,480.30x = 92,220.45 × 57,786.70
  4. Step 4: Simplify right side
    61,480.30x = 5,329,115,478.02
  5. Step 5: Solve for x
    x = 5,329,115,478.02/61,480.30
  6. Step 6: Final answer
    x = 86,680.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.