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Finding the Fourth Proportional to 86,783.36, 119,756 and 48,018.92

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Solution

The fourth proportional to 86,783.36, 119,756 and 48,018.92 is: 66,263.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,783.36 : 119,756 = 48,018.92 : x
  2. Step 2: Convert to fraction form
    86,783.36/119,756 = 48,018.92/x
  3. Step 3: Cross multiply
    86,783.36x = 119,756 × 48,018.92
  4. Step 4: Simplify right side
    86,783.36x = 5,750,553,783.52
  5. Step 5: Solve for x
    x = 5,750,553,783.52/86,783.36
  6. Step 6: Final answer
    x = 66,263.32

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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.