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Finding the Fourth Proportional to 66,348, 91,560.24 and 38,055.51

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Solution

The fourth proportional to 66,348, 91,560.24 and 38,055.51 is: 52,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,348 : 91,560.24 = 38,055.51 : x
  2. Step 2: Convert to fraction form
    66,348/91,560.24 = 38,055.51/x
  3. Step 3: Cross multiply
    66,348x = 91,560.24 × 38,055.51
  4. Step 4: Simplify right side
    66,348x = 3,484,371,628.92
  5. Step 5: Solve for x
    x = 3,484,371,628.92/66,348
  6. Step 6: Final answer
    x = 52,516.60

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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.