Home / 81,044,634.38-121,615,368.17-74,450,989.76

Finding the Fourth Proportional to 81,044,634.38, 121,615,368.17 and 74,450,989.76

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Solution

The fourth proportional to 81,044,634.38, 121,615,368.17 and 74,450,989.76 is: 111,720,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044,634.38 : 121,615,368.17 = 74,450,989.76 : x
  2. Step 2: Convert to fraction form
    81,044,634.38/121,615,368.17 = 74,450,989.76/x
  3. Step 3: Cross multiply
    81,044,634.38x = 121,615,368.17 × 74,450,989.76
  4. Step 4: Simplify right side
    81,044,634.38x = 9,054,384,529,302,968
  5. Step 5: Solve for x
    x = 9,054,384,529,302,968/81,044,634.38
  6. Step 6: Final answer
    x = 111,720,962.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.