Home / 78,869.20-118,336.20-28,973.20

Finding the Fourth Proportional to 78,869.20, 118,336.20 and 28,973.20

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Solution

The fourth proportional to 78,869.20, 118,336.20 and 28,973.20 is: 43,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.20 : 118,336.20 = 28,973.20 : x
  2. Step 2: Convert to fraction form
    78,869.20/118,336.20 = 28,973.20/x
  3. Step 3: Cross multiply
    78,869.20x = 118,336.20 × 28,973.20
  4. Step 4: Simplify right side
    78,869.20x = 3,428,578,389.84
  5. Step 5: Solve for x
    x = 3,428,578,389.84/78,869.20
  6. Step 6: Final answer
    x = 43,471.70

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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.