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Finding the Fourth Proportional to 70,756.94, 97,647 and 38,927.18

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Solution

The fourth proportional to 70,756.94, 97,647 and 38,927.18 is: 53,720.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,756.94 : 97,647 = 38,927.18 : x
  2. Step 2: Convert to fraction form
    70,756.94/97,647 = 38,927.18/x
  3. Step 3: Cross multiply
    70,756.94x = 97,647 × 38,927.18
  4. Step 4: Simplify right side
    70,756.94x = 3,801,122,345.46
  5. Step 5: Solve for x
    x = 3,801,122,345.46/70,756.94
  6. Step 6: Final answer
    x = 53,720.84

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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.