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Finding the Fourth Proportional to 40,498.80, 60,748.20 and 19,762.80

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Solution

The fourth proportional to 40,498.80, 60,748.20 and 19,762.80 is: 29,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,498.80 : 60,748.20 = 19,762.80 : x
  2. Step 2: Convert to fraction form
    40,498.80/60,748.20 = 19,762.80/x
  3. Step 3: Cross multiply
    40,498.80x = 60,748.20 × 19,762.80
  4. Step 4: Simplify right side
    40,498.80x = 1,200,554,526.96
  5. Step 5: Solve for x
    x = 1,200,554,526.96/40,498.80
  6. Step 6: Final answer
    x = 29,644.20

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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.