Home / 85,019.10-127,419.30-51,703.80

Finding the Fourth Proportional to 85,019.10, 127,419.30 and 51,703.80

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Solution

The fourth proportional to 85,019.10, 127,419.30 and 51,703.80 is: 77,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,019.10 : 127,419.30 = 51,703.80 : x
  2. Step 2: Convert to fraction form
    85,019.10/127,419.30 = 51,703.80/x
  3. Step 3: Cross multiply
    85,019.10x = 127,419.30 × 51,703.80
  4. Step 4: Simplify right side
    85,019.10x = 6,588,062,003.34
  5. Step 5: Solve for x
    x = 6,588,062,003.34/85,019.10
  6. Step 6: Final answer
    x = 77,489.20

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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.