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Finding the Fourth Proportional to 99,484.84, 137,289 and 54,772.84

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Solution

The fourth proportional to 99,484.84, 137,289 and 54,772.84 is: 75,586.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,484.84 : 137,289 = 54,772.84 : x
  2. Step 2: Convert to fraction form
    99,484.84/137,289 = 54,772.84/x
  3. Step 3: Cross multiply
    99,484.84x = 137,289 × 54,772.84
  4. Step 4: Simplify right side
    99,484.84x = 7,519,708,430.76
  5. Step 5: Solve for x
    x = 7,519,708,430.76/99,484.84
  6. Step 6: Final answer
    x = 75,586.48

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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.