Home / 86,407.48-129,611.16-49,445.56

Finding the Fourth Proportional to 86,407.48, 129,611.16 and 49,445.56

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Solution

The fourth proportional to 86,407.48, 129,611.16 and 49,445.56 is: 74,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,407.48 : 129,611.16 = 49,445.56 : x
  2. Step 2: Convert to fraction form
    86,407.48/129,611.16 = 49,445.56/x
  3. Step 3: Cross multiply
    86,407.48x = 129,611.16 × 49,445.56
  4. Step 4: Simplify right side
    86,407.48x = 6,408,696,388.45
  5. Step 5: Solve for x
    x = 6,408,696,388.45/86,407.48
  6. Step 6: Final answer
    x = 74,168.31

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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.