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Finding the Fourth Proportional to 78,663.48, 117,993.06 and 19,497.84

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Solution

The fourth proportional to 78,663.48, 117,993.06 and 19,497.84 is: 29,246.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,663.48 : 117,993.06 = 19,497.84 : x
  2. Step 2: Convert to fraction form
    78,663.48/117,993.06 = 19,497.84/x
  3. Step 3: Cross multiply
    78,663.48x = 117,993.06 × 19,497.84
  4. Step 4: Simplify right side
    78,663.48x = 2,300,609,804.99
  5. Step 5: Solve for x
    x = 2,300,609,804.99/78,663.48
  6. Step 6: Final answer
    x = 29,246.22

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1.5x scale

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.