Home / 39,118,711.05-53,981,120.79-21,713,686.20

Finding the Fourth Proportional to 39,118,711.05, 53,981,120.79 and 21,713,686.20

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Solution

The fourth proportional to 39,118,711.05, 53,981,120.79 and 21,713,686.20 is: 29,963,388.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,118,711.05 : 53,981,120.79 = 21,713,686.20 : x
  2. Step 2: Convert to fraction form
    39,118,711.05/53,981,120.79 = 21,713,686.20/x
  3. Step 3: Cross multiply
    39,118,711.05x = 53,981,120.79 × 21,713,686.20
  4. Step 4: Simplify right side
    39,118,711.05x = 1,172,129,117,558,356
  5. Step 5: Solve for x
    x = 1,172,129,117,558,356/39,118,711.05
  6. Step 6: Final answer
    x = 29,963,388.01

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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.