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Finding the Fourth Proportional to 39,975.60, 60,001.80 and 20,276.40

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Solution

The fourth proportional to 39,975.60, 60,001.80 and 20,276.40 is: 30,434.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,975.60 : 60,001.80 = 20,276.40 : x
  2. Step 2: Convert to fraction form
    39,975.60/60,001.80 = 20,276.40/x
  3. Step 3: Cross multiply
    39,975.60x = 60,001.80 × 20,276.40
  4. Step 4: Simplify right side
    39,975.60x = 1,216,620,497.52
  5. Step 5: Solve for x
    x = 1,216,620,497.52/39,975.60
  6. Step 6: Final answer
    x = 30,434.08

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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.