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Finding the Fourth Proportional to 40,460.40, 60,661.80 and 15,490.80

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Solution

The fourth proportional to 40,460.40, 60,661.80 and 15,490.80 is: 23,225.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,460.40 : 60,661.80 = 15,490.80 : x
  2. Step 2: Convert to fraction form
    40,460.40/60,661.80 = 15,490.80/x
  3. Step 3: Cross multiply
    40,460.40x = 60,661.80 × 15,490.80
  4. Step 4: Simplify right side
    40,460.40x = 939,699,811.44
  5. Step 5: Solve for x
    x = 939,699,811.44/40,460.40
  6. Step 6: Final answer
    x = 23,225.17

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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.