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Finding the Fourth Proportional to 66,776.48, 100,127.28 and 45,740.28

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Solution

The fourth proportional to 66,776.48, 100,127.28 and 45,740.28 is: 68,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,776.48 : 100,127.28 = 45,740.28 : x
  2. Step 2: Convert to fraction form
    66,776.48/100,127.28 = 45,740.28/x
  3. Step 3: Cross multiply
    66,776.48x = 100,127.28 × 45,740.28
  4. Step 4: Simplify right side
    66,776.48x = 4,579,849,822.84
  5. Step 5: Solve for x
    x = 4,579,849,822.84/66,776.48
  6. Step 6: Final answer
    x = 68,584.77

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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.