Home / 85,934,896.88-128,901,082.30-21,238,707.52

Finding the Fourth Proportional to 85,934,896.88, 128,901,082.30 and 21,238,707.52

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Solution

The fourth proportional to 85,934,896.88, 128,901,082.30 and 21,238,707.52 is: 31,857,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934,896.88 : 128,901,082.30 = 21,238,707.52 : x
  2. Step 2: Convert to fraction form
    85,934,896.88/128,901,082.30 = 21,238,707.52/x
  3. Step 3: Cross multiply
    85,934,896.88x = 128,901,082.30 × 21,238,707.52
  4. Step 4: Simplify right side
    85,934,896.88x = 2,737,692,385,981,149
  5. Step 5: Solve for x
    x = 2,737,692,385,981,149/85,934,896.88
  6. Step 6: Final answer
    x = 31,857,749.13

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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.