Home / 78,717.37-118,076.59-28,776.92

Finding the Fourth Proportional to 78,717.37, 118,076.59 and 28,776.92

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Solution

The fourth proportional to 78,717.37, 118,076.59 and 28,776.92 is: 43,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,717.37 : 118,076.59 = 28,776.92 : x
  2. Step 2: Convert to fraction form
    78,717.37/118,076.59 = 28,776.92/x
  3. Step 3: Cross multiply
    78,717.37x = 118,076.59 × 28,776.92
  4. Step 4: Simplify right side
    78,717.37x = 3,397,880,532.20
  5. Step 5: Solve for x
    x = 3,397,880,532.20/78,717.37
  6. Step 6: Final answer
    x = 43,165.58

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1.5x scale

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.