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Finding the Fourth Proportional to 66,688.89, 92,078.86 and 41,230.16

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Solution

The fourth proportional to 66,688.89, 92,078.86 and 41,230.16 is: 56,927.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,688.89 : 92,078.86 = 41,230.16 : x
  2. Step 2: Convert to fraction form
    66,688.89/92,078.86 = 41,230.16/x
  3. Step 3: Cross multiply
    66,688.89x = 92,078.86 × 41,230.16
  4. Step 4: Simplify right side
    66,688.89x = 3,796,426,130.42
  5. Step 5: Solve for x
    x = 3,796,426,130.42/66,688.89
  6. Step 6: Final answer
    x = 56,927.42

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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.