Home / 78,370.10-117,555.15-48,772.70

Finding the Fourth Proportional to 78,370.10, 117,555.15 and 48,772.70

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Solution

The fourth proportional to 78,370.10, 117,555.15 and 48,772.70 is: 73,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.10 : 117,555.15 = 48,772.70 : x
  2. Step 2: Convert to fraction form
    78,370.10/117,555.15 = 48,772.70/x
  3. Step 3: Cross multiply
    78,370.10x = 117,555.15 × 48,772.70
  4. Step 4: Simplify right side
    78,370.10x = 5,733,482,064.41
  5. Step 5: Solve for x
    x = 5,733,482,064.41/78,370.10
  6. Step 6: Final answer
    x = 73,159.05

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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.