Home / 78,404,946.91-108,212,369.73-45,383,403.15

Finding the Fourth Proportional to 78,404,946.91, 108,212,369.73 and 45,383,403.15

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Solution

The fourth proportional to 78,404,946.91, 108,212,369.73 and 45,383,403.15 is: 62,636,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,404,946.91 : 108,212,369.73 = 45,383,403.15 : x
  2. Step 2: Convert to fraction form
    78,404,946.91/108,212,369.73 = 45,383,403.15/x
  3. Step 3: Cross multiply
    78,404,946.91x = 108,212,369.73 × 45,383,403.15
  4. Step 4: Simplify right side
    78,404,946.91x = 4,911,045,601,103,258
  5. Step 5: Solve for x
    x = 4,911,045,601,103,258/78,404,946.91
  6. Step 6: Final answer
    x = 62,636,935.48

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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.