Home / 74,731,542.80-112,097,314.20-20,878,768.40

Finding the Fourth Proportional to 74,731,542.80, 112,097,314.20 and 20,878,768.40

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Solution

The fourth proportional to 74,731,542.80, 112,097,314.20 and 20,878,768.40 is: 31,318,152.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,731,542.80 : 112,097,314.20 = 20,878,768.40 : x
  2. Step 2: Convert to fraction form
    74,731,542.80/112,097,314.20 = 20,878,768.40/x
  3. Step 3: Cross multiply
    74,731,542.80x = 112,097,314.20 × 20,878,768.40
  4. Step 4: Simplify right side
    74,731,542.80x = 2,340,453,861,443,831
  5. Step 5: Solve for x
    x = 2,340,453,861,443,831/74,731,542.80
  6. Step 6: Final answer
    x = 31,318,152.60

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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.