Home / 86,557.96-129,832.08-30,400.66

Finding the Fourth Proportional to 86,557.96, 129,832.08 and 30,400.66

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Solution

The fourth proportional to 86,557.96, 129,832.08 and 30,400.66 is: 45,599.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,557.96 : 129,832.08 = 30,400.66 : x
  2. Step 2: Convert to fraction form
    86,557.96/129,832.08 = 30,400.66/x
  3. Step 3: Cross multiply
    86,557.96x = 129,832.08 × 30,400.66
  4. Step 4: Simplify right side
    86,557.96x = 3,946,980,921.17
  5. Step 5: Solve for x
    x = 3,946,980,921.17/86,557.96
  6. Step 6: Final answer
    x = 45,599.28

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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.