Home / 78,836.78-118,184.85-28,905.24

Finding the Fourth Proportional to 78,836.78, 118,184.85 and 28,905.24

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Solution

The fourth proportional to 78,836.78, 118,184.85 and 28,905.24 is: 43,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,836.78 : 118,184.85 = 28,905.24 : x
  2. Step 2: Convert to fraction form
    78,836.78/118,184.85 = 28,905.24/x
  3. Step 3: Cross multiply
    78,836.78x = 118,184.85 × 28,905.24
  4. Step 4: Simplify right side
    78,836.78x = 3,416,161,453.61
  5. Step 5: Solve for x
    x = 3,416,161,453.61/78,836.78
  6. Step 6: Final answer
    x = 43,332.08

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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.