Home / 86,343.40-129,476.70-39,610.60

Finding the Fourth Proportional to 86,343.40, 129,476.70 and 39,610.60

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Solution

The fourth proportional to 86,343.40, 129,476.70 and 39,610.60 is: 59,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,343.40 : 129,476.70 = 39,610.60 : x
  2. Step 2: Convert to fraction form
    86,343.40/129,476.70 = 39,610.60/x
  3. Step 3: Cross multiply
    86,343.40x = 129,476.70 × 39,610.60
  4. Step 4: Simplify right side
    86,343.40x = 5,128,649,773.02
  5. Step 5: Solve for x
    x = 5,128,649,773.02/86,343.40
  6. Step 6: Final answer
    x = 59,398.28

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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.