Home / 78,511.02-117,721.83-53,581.27

Finding the Fourth Proportional to 78,511.02, 117,721.83 and 53,581.27

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Solution

The fourth proportional to 78,511.02, 117,721.83 and 53,581.27 is: 80,341.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,511.02 : 117,721.83 = 53,581.27 : x
  2. Step 2: Convert to fraction form
    78,511.02/117,721.83 = 53,581.27/x
  3. Step 3: Cross multiply
    78,511.02x = 117,721.83 × 53,581.27
  4. Step 4: Simplify right side
    78,511.02x = 6,307,685,158.12
  5. Step 5: Solve for x
    x = 6,307,685,158.12/78,511.02
  6. Step 6: Final answer
    x = 80,341.40

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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.