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Finding the Fourth Proportional to 66,378.17, 91,602.95 and 36,164.93

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Solution

The fourth proportional to 66,378.17, 91,602.95 and 36,164.93 is: 49,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,378.17 : 91,602.95 = 36,164.93 : x
  2. Step 2: Convert to fraction form
    66,378.17/91,602.95 = 36,164.93/x
  3. Step 3: Cross multiply
    66,378.17x = 91,602.95 × 36,164.93
  4. Step 4: Simplify right side
    66,378.17x = 3,312,814,274.54
  5. Step 5: Solve for x
    x = 3,312,814,274.54/66,378.17
  6. Step 6: Final answer
    x = 49,908.19

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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.