Home / 84,109,516.78-116,123,678.34-64,492,719.70

Finding the Fourth Proportional to 84,109,516.78, 116,123,678.34 and 64,492,719.70

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Solution

The fourth proportional to 84,109,516.78, 116,123,678.34 and 64,492,719.70 is: 89,040,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,109,516.78 : 116,123,678.34 = 64,492,719.70 : x
  2. Step 2: Convert to fraction form
    84,109,516.78/116,123,678.34 = 64,492,719.70/x
  3. Step 3: Cross multiply
    84,109,516.78x = 116,123,678.34 × 64,492,719.70
  4. Step 4: Simplify right side
    84,109,516.78x = 7,489,131,837,714,582
  5. Step 5: Solve for x
    x = 7,489,131,837,714,582/84,109,516.78
  6. Step 6: Final answer
    x = 89,040,243.30

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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.