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Finding the Fourth Proportional to 89,883, 124,038.54 and 50,139

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Solution

The fourth proportional to 89,883, 124,038.54 and 50,139 is: 69,191.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,883 : 124,038.54 = 50,139 : x
  2. Step 2: Convert to fraction form
    89,883/124,038.54 = 50,139/x
  3. Step 3: Cross multiply
    89,883x = 124,038.54 × 50,139
  4. Step 4: Simplify right side
    89,883x = 6,219,168,357.06
  5. Step 5: Solve for x
    x = 6,219,168,357.06/89,883
  6. Step 6: Final answer
    x = 69,191.82

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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.