Home / 78,545,787.72-117,632,027.68-39,561,601.02

Finding the Fourth Proportional to 78,545,787.72, 117,632,027.68 and 39,561,601.02

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Solution

The fourth proportional to 78,545,787.72, 117,632,027.68 and 39,561,601.02 is: 59,248,388.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545,787.72 : 117,632,027.68 = 39,561,601.02 : x
  2. Step 2: Convert to fraction form
    78,545,787.72/117,632,027.68 = 39,561,601.02/x
  3. Step 3: Cross multiply
    78,545,787.72x = 117,632,027.68 × 39,561,601.02
  4. Step 4: Simplify right side
    78,545,787.72x = 4,653,711,346,249,757
  5. Step 5: Solve for x
    x = 4,653,711,346,249,757/78,545,787.72
  6. Step 6: Final answer
    x = 59,248,388.50

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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.