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Finding the Fourth Proportional to 38,407.66, 52,987.93 and 28,360.22

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Solution

The fourth proportional to 38,407.66, 52,987.93 and 28,360.22 is: 39,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,407.66 : 52,987.93 = 28,360.22 : x
  2. Step 2: Convert to fraction form
    38,407.66/52,987.93 = 28,360.22/x
  3. Step 3: Cross multiply
    38,407.66x = 52,987.93 × 28,360.22
  4. Step 4: Simplify right side
    38,407.66x = 1,502,749,016.30
  5. Step 5: Solve for x
    x = 1,502,749,016.30/38,407.66
  6. Step 6: Final answer
    x = 39,126.29

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