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Finding the Fourth Proportional to 30,761.60, 43,095.40 and 30,761.60

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Solution

The fourth proportional to 30,761.60, 43,095.40 and 30,761.60 is: 43,095.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,761.60 : 43,095.40 = 30,761.60 : x
  2. Step 2: Convert to fraction form
    30,761.60/43,095.40 = 30,761.60/x
  3. Step 3: Cross multiply
    30,761.60x = 43,095.40 × 30,761.60
  4. Step 4: Simplify right side
    30,761.60x = 1,325,683,456.64
  5. Step 5: Solve for x
    x = 1,325,683,456.64/30,761.60
  6. Step 6: Final answer
    x = 43,095.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.