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Finding the Fourth Proportional to 66,223.68, 91,386.68 and 36,009.06

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Solution

The fourth proportional to 66,223.68, 91,386.68 and 36,009.06 is: 49,691.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,223.68 : 91,386.68 = 36,009.06 : x
  2. Step 2: Convert to fraction form
    66,223.68/91,386.68 = 36,009.06/x
  3. Step 3: Cross multiply
    66,223.68x = 91,386.68 × 36,009.06
  4. Step 4: Simplify right side
    66,223.68x = 3,290,748,443.32
  5. Step 5: Solve for x
    x = 3,290,748,443.32/66,223.68
  6. Step 6: Final answer
    x = 49,691.42

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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.