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Finding the Fourth Proportional to 78,695.52, 118,041.48 and 19,530.24

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Solution

The fourth proportional to 78,695.52, 118,041.48 and 19,530.24 is: 29,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.52 : 118,041.48 = 19,530.24 : x
  2. Step 2: Convert to fraction form
    78,695.52/118,041.48 = 19,530.24/x
  3. Step 3: Cross multiply
    78,695.52x = 118,041.48 × 19,530.24
  4. Step 4: Simplify right side
    78,695.52x = 2,305,378,434.36
  5. Step 5: Solve for x
    x = 2,305,378,434.36/78,695.52
  6. Step 6: Final answer
    x = 29,294.91

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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.