Home / 28,070,108.20-42,022,493.70-20,913,369.40

Finding the Fourth Proportional to 28,070,108.20, 42,022,493.70 and 20,913,369.40

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Solution

The fourth proportional to 28,070,108.20, 42,022,493.70 and 20,913,369.40 is: 31,308,462.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070,108.20 : 42,022,493.70 = 20,913,369.40 : x
  2. Step 2: Convert to fraction form
    28,070,108.20/42,022,493.70 = 20,913,369.40/x
  3. Step 3: Cross multiply
    28,070,108.20x = 42,022,493.70 × 20,913,369.40
  4. Step 4: Simplify right side
    28,070,108.20x = 878,831,933,857,272.75
  5. Step 5: Solve for x
    x = 878,831,933,857,272.75/28,070,108.20
  6. Step 6: Final answer
    x = 31,308,462.64

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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.