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Finding the Fourth Proportional to 78,473.61, 117,499.01 and 62,603.28

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Solution

The fourth proportional to 78,473.61, 117,499.01 and 62,603.28 is: 93,736.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,473.61 : 117,499.01 = 62,603.28 : x
  2. Step 2: Convert to fraction form
    78,473.61/117,499.01 = 62,603.28/x
  3. Step 3: Cross multiply
    78,473.61x = 117,499.01 × 62,603.28
  4. Step 4: Simplify right side
    78,473.61x = 7,355,823,109.74
  5. Step 5: Solve for x
    x = 7,355,823,109.74/78,473.61
  6. Step 6: Final answer
    x = 93,736.27

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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.