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Finding the Fourth Proportional to 90,684.88, 124,838.76 and 74,744.08

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Solution

The fourth proportional to 90,684.88, 124,838.76 and 74,744.08 is: 102,894.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684.88 : 124,838.76 = 74,744.08 : x
  2. Step 2: Convert to fraction form
    90,684.88/124,838.76 = 74,744.08/x
  3. Step 3: Cross multiply
    90,684.88x = 124,838.76 × 74,744.08
  4. Step 4: Simplify right side
    90,684.88x = 9,330,958,264.54
  5. Step 5: Solve for x
    x = 9,330,958,264.54/90,684.88
  6. Step 6: Final answer
    x = 102,894.31

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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.