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Finding the Fourth Proportional to 30,881.60, 41,828.40 and 30,881.60

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Solution

The fourth proportional to 30,881.60, 41,828.40 and 30,881.60 is: 41,828.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,881.60 : 41,828.40 = 30,881.60 : x
  2. Step 2: Convert to fraction form
    30,881.60/41,828.40 = 30,881.60/x
  3. Step 3: Cross multiply
    30,881.60x = 41,828.40 × 30,881.60
  4. Step 4: Simplify right side
    30,881.60x = 1,291,727,917.44
  5. Step 5: Solve for x
    x = 1,291,727,917.44/30,881.60
  6. Step 6: Final answer
    x = 41,828.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.