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Finding the Fourth Proportional to 40,459.49, 60,696.51 and 12,379.01

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Solution

The fourth proportional to 40,459.49, 60,696.51 and 12,379.01 is: 18,570.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,459.49 : 60,696.51 = 12,379.01 : x
  2. Step 2: Convert to fraction form
    40,459.49/60,696.51 = 12,379.01/x
  3. Step 3: Cross multiply
    40,459.49x = 60,696.51 × 12,379.01
  4. Step 4: Simplify right side
    40,459.49x = 751,362,400.77
  5. Step 5: Solve for x
    x = 751,362,400.77/40,459.49
  6. Step 6: Final answer
    x = 18,570.74

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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.