Home / 28,070,116.20-42,022,505.70-20,913,377.40

Finding the Fourth Proportional to 28,070,116.20, 42,022,505.70 and 20,913,377.40

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Solution

The fourth proportional to 28,070,116.20, 42,022,505.70 and 20,913,377.40 is: 31,308,474.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070,116.20 : 42,022,505.70 = 20,913,377.40 : x
  2. Step 2: Convert to fraction form
    28,070,116.20/42,022,505.70 = 20,913,377.40/x
  3. Step 3: Cross multiply
    28,070,116.20x = 42,022,505.70 × 20,913,377.40
  4. Step 4: Simplify right side
    28,070,116.20x = 878,832,520,997,751.12
  5. Step 5: Solve for x
    x = 878,832,520,997,751.12/28,070,116.20
  6. Step 6: Final answer
    x = 31,308,474.63

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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.