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Finding the Fourth Proportional to 81,673,627.60, 114,428,109.20 and 81,673,627.60

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Solution

The fourth proportional to 81,673,627.60, 114,428,109.20 and 81,673,627.60 is: 114,428,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,673,627.60 : 114,428,109.20 = 81,673,627.60 : x
  2. Step 2: Convert to fraction form
    81,673,627.60/114,428,109.20 = 81,673,627.60/x
  3. Step 3: Cross multiply
    81,673,627.60x = 114,428,109.20 × 81,673,627.60
  4. Step 4: Simplify right side
    81,673,627.60x = 9,345,758,777,772,934
  5. Step 5: Solve for x
    x = 9,345,758,777,772,934/81,673,627.60
  6. Step 6: Final answer
    x = 114,428,109.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.