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Finding the Fourth Proportional to 90,347.70, 124,678 and 50,061.34

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Solution

The fourth proportional to 90,347.70, 124,678 and 50,061.34 is: 69,083.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,347.70 : 124,678 = 50,061.34 : x
  2. Step 2: Convert to fraction form
    90,347.70/124,678 = 50,061.34/x
  3. Step 3: Cross multiply
    90,347.70x = 124,678 × 50,061.34
  4. Step 4: Simplify right side
    90,347.70x = 6,241,547,748.52
  5. Step 5: Solve for x
    x = 6,241,547,748.52/90,347.70
  6. Step 6: Final answer
    x = 69,083.64

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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.