Home / 84,109,509.78-116,123,668.68-64,492,712.70

Finding the Fourth Proportional to 84,109,509.78, 116,123,668.68 and 64,492,712.70

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Solution

The fourth proportional to 84,109,509.78, 116,123,668.68 and 64,492,712.70 is: 89,040,233.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,109,509.78 : 116,123,668.68 = 64,492,712.70 : x
  2. Step 2: Convert to fraction form
    84,109,509.78/116,123,668.68 = 64,492,712.70/x
  3. Step 3: Cross multiply
    84,109,509.78x = 116,123,668.68 × 64,492,712.70
  4. Step 4: Simplify right side
    84,109,509.78x = 7,489,130,401,849,229
  5. Step 5: Solve for x
    x = 7,489,130,401,849,229/84,109,509.78
  6. Step 6: Final answer
    x = 89,040,233.64

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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.