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Finding the Fourth Proportional to 49,259.51, 67,978.55 and 28,040.13

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Solution

The fourth proportional to 49,259.51, 67,978.55 and 28,040.13 is: 38,695.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,259.51 : 67,978.55 = 28,040.13 : x
  2. Step 2: Convert to fraction form
    49,259.51/67,978.55 = 28,040.13/x
  3. Step 3: Cross multiply
    49,259.51x = 67,978.55 × 28,040.13
  4. Step 4: Simplify right side
    49,259.51x = 1,906,127,239.01
  5. Step 5: Solve for x
    x = 1,906,127,239.01/49,259.51
  6. Step 6: Final answer
    x = 38,695.62

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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.