Home / 86,929.12-119,919.86-56,700.73

Finding the Fourth Proportional to 86,929.12, 119,919.86 and 56,700.73

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Solution

The fourth proportional to 86,929.12, 119,919.86 and 56,700.73 is: 78,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,929.12 : 119,919.86 = 56,700.73 : x
  2. Step 2: Convert to fraction form
    86,929.12/119,919.86 = 56,700.73/x
  3. Step 3: Cross multiply
    86,929.12x = 119,919.86 × 56,700.73
  4. Step 4: Simplify right side
    86,929.12x = 6,799,543,319.99
  5. Step 5: Solve for x
    x = 6,799,543,319.99/86,929.12
  6. Step 6: Final answer
    x = 78,219.40

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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.