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Finding the Fourth Proportional to 30,291.60, 45,388.80 and 25,334.40

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Solution

The fourth proportional to 30,291.60, 45,388.80 and 25,334.40 is: 37,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,291.60 : 45,388.80 = 25,334.40 : x
  2. Step 2: Convert to fraction form
    30,291.60/45,388.80 = 25,334.40/x
  3. Step 3: Cross multiply
    30,291.60x = 45,388.80 × 25,334.40
  4. Step 4: Simplify right side
    30,291.60x = 1,149,898,014.72
  5. Step 5: Solve for x
    x = 1,149,898,014.72/30,291.60
  6. Step 6: Final answer
    x = 37,960.95

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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.