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Finding the Fourth Proportional to 85,480.04, 128,179.80 and 49,951.62

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Solution

The fourth proportional to 85,480.04, 128,179.80 and 49,951.62 is: 74,903.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,480.04 : 128,179.80 = 49,951.62 : x
  2. Step 2: Convert to fraction form
    85,480.04/128,179.80 = 49,951.62/x
  3. Step 3: Cross multiply
    85,480.04x = 128,179.80 × 49,951.62
  4. Step 4: Simplify right side
    85,480.04x = 6,402,788,661.28
  5. Step 5: Solve for x
    x = 6,402,788,661.28/85,480.04
  6. Step 6: Final answer
    x = 74,903.90

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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.