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Finding the Fourth Proportional to 108,040.80, 162,061.20 and 45,703.20

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Solution

The fourth proportional to 108,040.80, 162,061.20 and 45,703.20 is: 68,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,040.80 : 162,061.20 = 45,703.20 : x
  2. Step 2: Convert to fraction form
    108,040.80/162,061.20 = 45,703.20/x
  3. Step 3: Cross multiply
    108,040.80x = 162,061.20 × 45,703.20
  4. Step 4: Simplify right side
    108,040.80x = 7,406,715,435.84
  5. Step 5: Solve for x
    x = 7,406,715,435.84/108,040.80
  6. Step 6: Final answer
    x = 68,554.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.