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Finding the Fourth Proportional to 53,978.06, 74,489.92 and 30,109.70

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Solution

The fourth proportional to 53,978.06, 74,489.92 and 30,109.70 is: 41,551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,978.06 : 74,489.92 = 30,109.70 : x
  2. Step 2: Convert to fraction form
    53,978.06/74,489.92 = 30,109.70/x
  3. Step 3: Cross multiply
    53,978.06x = 74,489.92 × 30,109.70
  4. Step 4: Simplify right side
    53,978.06x = 2,242,869,144.22
  5. Step 5: Solve for x
    x = 2,242,869,144.22/53,978.06
  6. Step 6: Final answer
    x = 41,551.50

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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.