Home / 78,680.98-118,124.35-46,718.38

Finding the Fourth Proportional to 78,680.98, 118,124.35 and 46,718.38

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Solution

The fourth proportional to 78,680.98, 118,124.35 and 46,718.38 is: 70,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.98 : 118,124.35 = 46,718.38 : x
  2. Step 2: Convert to fraction form
    78,680.98/118,124.35 = 46,718.38/x
  3. Step 3: Cross multiply
    78,680.98x = 118,124.35 × 46,718.38
  4. Step 4: Simplify right side
    78,680.98x = 5,518,577,858.45
  5. Step 5: Solve for x
    x = 5,518,577,858.45/78,680.98
  6. Step 6: Final answer
    x = 70,138.65

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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.