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Finding the Fourth Proportional to 39,809.20, 59,713.80 and 38,059.60

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Solution

The fourth proportional to 39,809.20, 59,713.80 and 38,059.60 is: 57,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,809.20 : 59,713.80 = 38,059.60 : x
  2. Step 2: Convert to fraction form
    39,809.20/59,713.80 = 38,059.60/x
  3. Step 3: Cross multiply
    39,809.20x = 59,713.80 × 38,059.60
  4. Step 4: Simplify right side
    39,809.20x = 2,272,683,342.48
  5. Step 5: Solve for x
    x = 2,272,683,342.48/39,809.20
  6. Step 6: Final answer
    x = 57,089.40

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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.