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Finding the Fourth Proportional to 88,129.95, 121,619.53 and 47,843.81

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Solution

The fourth proportional to 88,129.95, 121,619.53 and 47,843.81 is: 66,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,129.95 : 121,619.53 = 47,843.81 : x
  2. Step 2: Convert to fraction form
    88,129.95/121,619.53 = 47,843.81/x
  3. Step 3: Cross multiply
    88,129.95x = 121,619.53 × 47,843.81
  4. Step 4: Simplify right side
    88,129.95x = 5,818,742,008.38
  5. Step 5: Solve for x
    x = 5,818,742,008.38/88,129.95
  6. Step 6: Final answer
    x = 66,024.57

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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.