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Finding the Fourth Proportional to 30,848.20, 43,318.70 and 30,848.20

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Solution

The fourth proportional to 30,848.20, 43,318.70 and 30,848.20 is: 43,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,848.20 : 43,318.70 = 30,848.20 : x
  2. Step 2: Convert to fraction form
    30,848.20/43,318.70 = 30,848.20/x
  3. Step 3: Cross multiply
    30,848.20x = 43,318.70 × 30,848.20
  4. Step 4: Simplify right side
    30,848.20x = 1,336,303,921.34
  5. Step 5: Solve for x
    x = 1,336,303,921.34/30,848.20
  6. Step 6: Final answer
    x = 43,318.70

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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.