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Finding the Fourth Proportional to 39,892.40, 59,838.60 and 30,561.20

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Solution

The fourth proportional to 39,892.40, 59,838.60 and 30,561.20 is: 45,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,892.40 : 59,838.60 = 30,561.20 : x
  2. Step 2: Convert to fraction form
    39,892.40/59,838.60 = 30,561.20/x
  3. Step 3: Cross multiply
    39,892.40x = 59,838.60 × 30,561.20
  4. Step 4: Simplify right side
    39,892.40x = 1,828,739,422.32
  5. Step 5: Solve for x
    x = 1,828,739,422.32/39,892.40
  6. Step 6: Final answer
    x = 45,841.80

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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.