Home / 81,421,528.86-121,956,910.47-38,226,004.38

Finding the Fourth Proportional to 81,421,528.86, 121,956,910.47 and 38,226,004.38

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Solution

The fourth proportional to 81,421,528.86, 121,956,910.47 and 38,226,004.38 is: 57,256,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421,528.86 : 121,956,910.47 = 38,226,004.38 : x
  2. Step 2: Convert to fraction form
    81,421,528.86/121,956,910.47 = 38,226,004.38/x
  3. Step 3: Cross multiply
    81,421,528.86x = 121,956,910.47 × 38,226,004.38
  4. Step 4: Simplify right side
    81,421,528.86x = 4,661,925,393,797,488
  5. Step 5: Solve for x
    x = 4,661,925,393,797,488/81,421,528.86
  6. Step 6: Final answer
    x = 57,256,667.36

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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.