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Finding the Fourth Proportional to 75,803.84, 104,638.12 and 56,995.60

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Solution

The fourth proportional to 75,803.84, 104,638.12 and 56,995.60 is: 78,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,803.84 : 104,638.12 = 56,995.60 : x
  2. Step 2: Convert to fraction form
    75,803.84/104,638.12 = 56,995.60/x
  3. Step 3: Cross multiply
    75,803.84x = 104,638.12 × 56,995.60
  4. Step 4: Simplify right side
    75,803.84x = 5,963,912,432.27
  5. Step 5: Solve for x
    x = 5,963,912,432.27/75,803.84
  6. Step 6: Final answer
    x = 78,675.60

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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.