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Finding the Fourth Proportional to 76,063.61, 104,965.80 and 42,071.25

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Solution

The fourth proportional to 76,063.61, 104,965.80 and 42,071.25 is: 58,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,063.61 : 104,965.80 = 42,071.25 : x
  2. Step 2: Convert to fraction form
    76,063.61/104,965.80 = 42,071.25/x
  3. Step 3: Cross multiply
    76,063.61x = 104,965.80 × 42,071.25
  4. Step 4: Simplify right side
    76,063.61x = 4,416,042,413.25
  5. Step 5: Solve for x
    x = 4,416,042,413.25/76,063.61
  6. Step 6: Final answer
    x = 58,057.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.