Home / 86,580.24-119,410.11-72,729.78

Finding the Fourth Proportional to 86,580.24, 119,410.11 and 72,729.78

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Solution

The fourth proportional to 86,580.24, 119,410.11 and 72,729.78 is: 100,307.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,580.24 : 119,410.11 = 72,729.78 : x
  2. Step 2: Convert to fraction form
    86,580.24/119,410.11 = 72,729.78/x
  3. Step 3: Cross multiply
    86,580.24x = 119,410.11 × 72,729.78
  4. Step 4: Simplify right side
    86,580.24x = 8,684,671,030.08
  5. Step 5: Solve for x
    x = 8,684,671,030.08/86,580.24
  6. Step 6: Final answer
    x = 100,307.77

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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.