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Finding the Fourth Proportional to 71,681.81, 98,775.02 and 55,450.53

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Solution

The fourth proportional to 71,681.81, 98,775.02 and 55,450.53 is: 76,408.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,681.81 : 98,775.02 = 55,450.53 : x
  2. Step 2: Convert to fraction form
    71,681.81/98,775.02 = 55,450.53/x
  3. Step 3: Cross multiply
    71,681.81x = 98,775.02 × 55,450.53
  4. Step 4: Simplify right side
    71,681.81x = 5,477,126,977.98
  5. Step 5: Solve for x
    x = 5,477,126,977.98/71,681.81
  6. Step 6: Final answer
    x = 76,408.88

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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.