Home / 65,891,214.78-90,929,719.47-36,121,810.38

Finding the Fourth Proportional to 65,891,214.78, 90,929,719.47 and 36,121,810.38

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Solution

The fourth proportional to 65,891,214.78, 90,929,719.47 and 36,121,810.38 is: 49,848,012.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,891,214.78 : 90,929,719.47 = 36,121,810.38 : x
  2. Step 2: Convert to fraction form
    65,891,214.78/90,929,719.47 = 36,121,810.38/x
  3. Step 3: Cross multiply
    65,891,214.78x = 90,929,719.47 × 36,121,810.38
  4. Step 4: Simplify right side
    65,891,214.78x = 3,284,546,084,601,934.50
  5. Step 5: Solve for x
    x = 3,284,546,084,601,934.50/65,891,214.78
  6. Step 6: Final answer
    x = 49,848,012.30

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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.