Home / 78,038.21-107,704.01-51,220.73

Finding the Fourth Proportional to 78,038.21, 107,704.01 and 51,220.73

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Solution

The fourth proportional to 78,038.21, 107,704.01 and 51,220.73 is: 70,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,038.21 : 107,704.01 = 51,220.73 : x
  2. Step 2: Convert to fraction form
    78,038.21/107,704.01 = 51,220.73/x
  3. Step 3: Cross multiply
    78,038.21x = 107,704.01 × 51,220.73
  4. Step 4: Simplify right side
    78,038.21x = 5,516,678,016.13
  5. Step 5: Solve for x
    x = 5,516,678,016.13/78,038.21
  6. Step 6: Final answer
    x = 70,692.01

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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.