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Finding the Fourth Proportional to 30,437.80, 45,656.70 and 22,078.60

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Solution

The fourth proportional to 30,437.80, 45,656.70 and 22,078.60 is: 33,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,437.80 : 45,656.70 = 22,078.60 : x
  2. Step 2: Convert to fraction form
    30,437.80/45,656.70 = 22,078.60/x
  3. Step 3: Cross multiply
    30,437.80x = 45,656.70 × 22,078.60
  4. Step 4: Simplify right side
    30,437.80x = 1,008,036,016.62
  5. Step 5: Solve for x
    x = 1,008,036,016.62/30,437.80
  6. Step 6: Final answer
    x = 33,117.90

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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.