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Finding the Fourth Proportional to 94,909.80, 130,981.70 and 54,628.52

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Solution

The fourth proportional to 94,909.80, 130,981.70 and 54,628.52 is: 75,390.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,909.80 : 130,981.70 = 54,628.52 : x
  2. Step 2: Convert to fraction form
    94,909.80/130,981.70 = 54,628.52/x
  3. Step 3: Cross multiply
    94,909.80x = 130,981.70 × 54,628.52
  4. Step 4: Simplify right side
    94,909.80x = 7,155,336,418.08
  5. Step 5: Solve for x
    x = 7,155,336,418.08/94,909.80
  6. Step 6: Final answer
    x = 75,390.91

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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.