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Finding the Fourth Proportional to 75,255, 103,868.10 and 45,047.08

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Solution

The fourth proportional to 75,255, 103,868.10 and 45,047.08 is: 62,174.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,255 : 103,868.10 = 45,047.08 : x
  2. Step 2: Convert to fraction form
    75,255/103,868.10 = 45,047.08/x
  3. Step 3: Cross multiply
    75,255x = 103,868.10 × 45,047.08
  4. Step 4: Simplify right side
    75,255x = 4,678,954,610.15
  5. Step 5: Solve for x
    x = 4,678,954,610.15/75,255
  6. Step 6: Final answer
    x = 62,174.67

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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.