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Finding the Fourth Proportional to 69,607.84, 96,057.28 and 39,389.12

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Solution

The fourth proportional to 69,607.84, 96,057.28 and 39,389.12 is: 54,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,607.84 : 96,057.28 = 39,389.12 : x
  2. Step 2: Convert to fraction form
    69,607.84/96,057.28 = 39,389.12/x
  3. Step 3: Cross multiply
    69,607.84x = 96,057.28 × 39,389.12
  4. Step 4: Simplify right side
    69,607.84x = 3,783,611,728.79
  5. Step 5: Solve for x
    x = 3,783,611,728.79/69,607.84
  6. Step 6: Final answer
    x = 54,356.11

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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.