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Finding the Fourth Proportional to 86,484.39, 119,287.13 and 56,213.88

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Solution

The fourth proportional to 86,484.39, 119,287.13 and 56,213.88 is: 77,535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,484.39 : 119,287.13 = 56,213.88 : x
  2. Step 2: Convert to fraction form
    86,484.39/119,287.13 = 56,213.88/x
  3. Step 3: Cross multiply
    86,484.39x = 119,287.13 × 56,213.88
  4. Step 4: Simplify right side
    86,484.39x = 6,705,592,130.30
  5. Step 5: Solve for x
    x = 6,705,592,130.30/86,484.39
  6. Step 6: Final answer
    x = 77,535.29

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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.