Home / 78,212,445.75-108,022,754.59-51,509,147.00

Finding the Fourth Proportional to 78,212,445.75, 108,022,754.59 and 51,509,147.00

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Solution

The fourth proportional to 78,212,445.75, 108,022,754.59 and 51,509,147.00 is: 71,141,618.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,212,445.75 : 108,022,754.59 = 51,509,147.00 : x
  2. Step 2: Convert to fraction form
    78,212,445.75/108,022,754.59 = 51,509,147.00/x
  3. Step 3: Cross multiply
    78,212,445.75x = 108,022,754.59 × 51,509,147.00
  4. Step 4: Simplify right side
    78,212,445.75x = 5,564,159,944,852,348
  5. Step 5: Solve for x
    x = 5,564,159,944,852,348/78,212,445.75
  6. Step 6: Final answer
    x = 71,141,618.08

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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.