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Finding the Fourth Proportional to 55,335,978.80, 83,003,968.20 and 16,997,431.40

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Solution

The fourth proportional to 55,335,978.80, 83,003,968.20 and 16,997,431.40 is: 25,496,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,335,978.80 : 83,003,968.20 = 16,997,431.40 : x
  2. Step 2: Convert to fraction form
    55,335,978.80/83,003,968.20 = 16,997,431.40/x
  3. Step 3: Cross multiply
    55,335,978.80x = 83,003,968.20 × 16,997,431.40
  4. Step 4: Simplify right side
    55,335,978.80x = 1,410,854,255,407,281.50
  5. Step 5: Solve for x
    x = 1,410,854,255,407,281.50/55,335,978.80
  6. Step 6: Final answer
    x = 25,496,147.10

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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.