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Finding the Fourth Proportional to 72,577,978.80, 101,743,539.60 and 72,577,978.80

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Solution

The fourth proportional to 72,577,978.80, 101,743,539.60 and 72,577,978.80 is: 101,743,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,577,978.80 : 101,743,539.60 = 72,577,978.80 : x
  2. Step 2: Convert to fraction form
    72,577,978.80/101,743,539.60 = 72,577,978.80/x
  3. Step 3: Cross multiply
    72,577,978.80x = 101,743,539.60 × 72,577,978.80
  4. Step 4: Simplify right side
    72,577,978.80x = 7,384,340,460,125,760
  5. Step 5: Solve for x
    x = 7,384,340,460,125,760/72,577,978.80
  6. Step 6: Final answer
    x = 101,743,539.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.