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Finding the Fourth Proportional to 90,307.98, 124,620.55 and 49,472.28

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Solution

The fourth proportional to 90,307.98, 124,620.55 and 49,472.28 is: 68,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,307.98 : 124,620.55 = 49,472.28 : x
  2. Step 2: Convert to fraction form
    90,307.98/124,620.55 = 49,472.28/x
  3. Step 3: Cross multiply
    90,307.98x = 124,620.55 × 49,472.28
  4. Step 4: Simplify right side
    90,307.98x = 6,165,262,743.35
  5. Step 5: Solve for x
    x = 6,165,262,743.35/90,307.98
  6. Step 6: Final answer
    x = 68,269.30

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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.