Home / 66,386.26-91,615.28-36,172.40

Finding the Fourth Proportional to 66,386.26, 91,615.28 and 36,172.40

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Solution

The fourth proportional to 66,386.26, 91,615.28 and 36,172.40 is: 49,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,386.26 : 91,615.28 = 36,172.40 : x
  2. Step 2: Convert to fraction form
    66,386.26/91,615.28 = 36,172.40/x
  3. Step 3: Cross multiply
    66,386.26x = 91,615.28 × 36,172.40
  4. Step 4: Simplify right side
    66,386.26x = 3,313,944,554.27
  5. Step 5: Solve for x
    x = 3,313,944,554.27/66,386.26
  6. Step 6: Final answer
    x = 49,919.13

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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.