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Finding the Fourth Proportional to 48,307.65, 72,461.49 and 12,768.90

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Solution

The fourth proportional to 48,307.65, 72,461.49 and 12,768.90 is: 19,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,307.65 : 72,461.49 = 12,768.90 : x
  2. Step 2: Convert to fraction form
    48,307.65/72,461.49 = 12,768.90/x
  3. Step 3: Cross multiply
    48,307.65x = 72,461.49 × 12,768.90
  4. Step 4: Simplify right side
    48,307.65x = 925,253,519.66
  5. Step 5: Solve for x
    x = 925,253,519.66/48,307.65
  6. Step 6: Final answer
    x = 19,153.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.