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Finding the Fourth Proportional to 66,098.71, 91,216.29 and 39,246.58

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Solution

The fourth proportional to 66,098.71, 91,216.29 and 39,246.58 is: 54,160.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,098.71 : 91,216.29 = 39,246.58 : x
  2. Step 2: Convert to fraction form
    66,098.71/91,216.29 = 39,246.58/x
  3. Step 3: Cross multiply
    66,098.71x = 91,216.29 × 39,246.58
  4. Step 4: Simplify right side
    66,098.71x = 3,579,927,422.79
  5. Step 5: Solve for x
    x = 3,579,927,422.79/66,098.71
  6. Step 6: Final answer
    x = 54,160.32

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1.5x scale

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.