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Finding the Fourth Proportional to 86,423.67, 119,287.22 and 56,291.67

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Solution

The fourth proportional to 86,423.67, 119,287.22 and 56,291.67 is: 77,697.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,423.67 : 119,287.22 = 56,291.67 : x
  2. Step 2: Convert to fraction form
    86,423.67/119,287.22 = 56,291.67/x
  3. Step 3: Cross multiply
    86,423.67x = 119,287.22 × 56,291.67
  4. Step 4: Simplify right side
    86,423.67x = 6,714,876,542.00
  5. Step 5: Solve for x
    x = 6,714,876,542.00/86,423.67
  6. Step 6: Final answer
    x = 77,697.19

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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.