Home / 57,087,277.77-78,780,723.75-30,981,825.58

Finding the Fourth Proportional to 57,087,277.77, 78,780,723.75 and 30,981,825.58

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Solution

The fourth proportional to 57,087,277.77, 78,780,723.75 and 30,981,825.58 is: 42,755,071.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087,277.77 : 78,780,723.75 = 30,981,825.58 : x
  2. Step 2: Convert to fraction form
    57,087,277.77/78,780,723.75 = 30,981,825.58/x
  3. Step 3: Cross multiply
    57,087,277.77x = 78,780,723.75 × 30,981,825.58
  4. Step 4: Simplify right side
    57,087,277.77x = 2,440,770,642,288,663.50
  5. Step 5: Solve for x
    x = 2,440,770,642,288,663.50/57,087,277.77
  6. Step 6: Final answer
    x = 42,755,071.49

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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.