Home / 78,948,657.10-118,449,871.26-42,560,563.78

Finding the Fourth Proportional to 78,948,657.10, 118,449,871.26 and 42,560,563.78

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Solution

The fourth proportional to 78,948,657.10, 118,449,871.26 and 42,560,563.78 is: 63,855,339.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,948,657.10 : 118,449,871.26 = 42,560,563.78 : x
  2. Step 2: Convert to fraction form
    78,948,657.10/118,449,871.26 = 42,560,563.78/x
  3. Step 3: Cross multiply
    78,948,657.10x = 118,449,871.26 × 42,560,563.78
  4. Step 4: Simplify right side
    78,948,657.10x = 5,041,293,300,494,019
  5. Step 5: Solve for x
    x = 5,041,293,300,494,019/78,948,657.10
  6. Step 6: Final answer
    x = 63,855,339.48

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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.