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Finding the Fourth Proportional to 80,653.61, 111,307.83 and 48,389.63

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Solution

The fourth proportional to 80,653.61, 111,307.83 and 48,389.63 is: 66,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,653.61 : 111,307.83 = 48,389.63 : x
  2. Step 2: Convert to fraction form
    80,653.61/111,307.83 = 48,389.63/x
  3. Step 3: Cross multiply
    80,653.61x = 111,307.83 × 48,389.63
  4. Step 4: Simplify right side
    80,653.61x = 5,386,144,709.80
  5. Step 5: Solve for x
    x = 5,386,144,709.80/80,653.61
  6. Step 6: Final answer
    x = 66,781.20

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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.