Home / 86,419.58-119,314.06-70,541.78

Finding the Fourth Proportional to 86,419.58, 119,314.06 and 70,541.78

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Solution

The fourth proportional to 86,419.58, 119,314.06 and 70,541.78 is: 97,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,419.58 : 119,314.06 = 70,541.78 : x
  2. Step 2: Convert to fraction form
    86,419.58/119,314.06 = 70,541.78/x
  3. Step 3: Cross multiply
    86,419.58x = 119,314.06 × 70,541.78
  4. Step 4: Simplify right side
    86,419.58x = 8,416,625,398.50
  5. Step 5: Solve for x
    x = 8,416,625,398.50/86,419.58
  6. Step 6: Final answer
    x = 97,392.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.