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Finding the Fourth Proportional to 55,957.10, 77,290.11 and 40,619.14

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Solution

The fourth proportional to 55,957.10, 77,290.11 and 40,619.14 is: 56,104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,957.10 : 77,290.11 = 40,619.14 : x
  2. Step 2: Convert to fraction form
    55,957.10/77,290.11 = 40,619.14/x
  3. Step 3: Cross multiply
    55,957.10x = 77,290.11 × 40,619.14
  4. Step 4: Simplify right side
    55,957.10x = 3,139,457,605.48
  5. Step 5: Solve for x
    x = 3,139,457,605.48/55,957.10
  6. Step 6: Final answer
    x = 56,104.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.