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Finding the Fourth Proportional to 39,967.95, 59,988.75 and 20,260.29

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Solution

The fourth proportional to 39,967.95, 59,988.75 and 20,260.29 is: 30,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,967.95 : 59,988.75 = 20,260.29 : x
  2. Step 2: Convert to fraction form
    39,967.95/59,988.75 = 20,260.29/x
  3. Step 3: Cross multiply
    39,967.95x = 59,988.75 × 20,260.29
  4. Step 4: Simplify right side
    39,967.95x = 1,215,389,471.74
  5. Step 5: Solve for x
    x = 1,215,389,471.74/39,967.95
  6. Step 6: Final answer
    x = 30,409.10

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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.