Home / 78,110.48-117,141.47-28,184.07

Finding the Fourth Proportional to 78,110.48, 117,141.47 and 28,184.07

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Solution

The fourth proportional to 78,110.48, 117,141.47 and 28,184.07 is: 42,267.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.48 : 117,141.47 = 28,184.07 : x
  2. Step 2: Convert to fraction form
    78,110.48/117,141.47 = 28,184.07/x
  3. Step 3: Cross multiply
    78,110.48x = 117,141.47 × 28,184.07
  4. Step 4: Simplify right side
    78,110.48x = 3,301,523,390.38
  5. Step 5: Solve for x
    x = 3,301,523,390.38/78,110.48
  6. Step 6: Final answer
    x = 42,267.36

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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.