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Finding the Fourth Proportional to 84,812.60, 127,218.90 and 49,820.60

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Solution

The fourth proportional to 84,812.60, 127,218.90 and 49,820.60 is: 74,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,812.60 : 127,218.90 = 49,820.60 : x
  2. Step 2: Convert to fraction form
    84,812.60/127,218.90 = 49,820.60/x
  3. Step 3: Cross multiply
    84,812.60x = 127,218.90 × 49,820.60
  4. Step 4: Simplify right side
    84,812.60x = 6,338,121,929.34
  5. Step 5: Solve for x
    x = 6,338,121,929.34/84,812.60
  6. Step 6: Final answer
    x = 74,730.90

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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.