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Finding the Fourth Proportional to 66,303.94, 91,491.33 and 39,447.58

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Solution

The fourth proportional to 66,303.94, 91,491.33 and 39,447.58 is: 54,432.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,303.94 : 91,491.33 = 39,447.58 : x
  2. Step 2: Convert to fraction form
    66,303.94/91,491.33 = 39,447.58/x
  3. Step 3: Cross multiply
    66,303.94x = 91,491.33 × 39,447.58
  4. Step 4: Simplify right side
    66,303.94x = 3,609,111,559.48
  5. Step 5: Solve for x
    x = 3,609,111,559.48/66,303.94
  6. Step 6: Final answer
    x = 54,432.84

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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.