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Finding the Fourth Proportional to 85,337,978.68, 117,766,720.80 and 46,179,751.36

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Solution

The fourth proportional to 85,337,978.68, 117,766,720.80 and 46,179,751.36 is: 63,728,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,337,978.68 : 117,766,720.80 = 46,179,751.36 : x
  2. Step 2: Convert to fraction form
    85,337,978.68/117,766,720.80 = 46,179,751.36/x
  3. Step 3: Cross multiply
    85,337,978.68x = 117,766,720.80 × 46,179,751.36
  4. Step 4: Simplify right side
    85,337,978.68x = 5,438,437,885,026,540
  5. Step 5: Solve for x
    x = 5,438,437,885,026,540/85,337,978.68
  6. Step 6: Final answer
    x = 63,728,224.75

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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.