Home / 78,901.26-118,281.54-28,969.92

Finding the Fourth Proportional to 78,901.26, 118,281.54 and 28,969.92

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Solution

The fourth proportional to 78,901.26, 118,281.54 and 28,969.92 is: 43,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,901.26 : 118,281.54 = 28,969.92 : x
  2. Step 2: Convert to fraction form
    78,901.26/118,281.54 = 28,969.92/x
  3. Step 3: Cross multiply
    78,901.26x = 118,281.54 × 28,969.92
  4. Step 4: Simplify right side
    78,901.26x = 3,426,606,751.28
  5. Step 5: Solve for x
    x = 3,426,606,751.28/78,901.26
  6. Step 6: Final answer
    x = 43,429.05

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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.