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Finding the Fourth Proportional to 86,652.88, 119,513.04 and 56,447.72

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Solution

The fourth proportional to 86,652.88, 119,513.04 and 56,447.72 is: 77,853.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,652.88 : 119,513.04 = 56,447.72 : x
  2. Step 2: Convert to fraction form
    86,652.88/119,513.04 = 56,447.72/x
  3. Step 3: Cross multiply
    86,652.88x = 119,513.04 × 56,447.72
  4. Step 4: Simplify right side
    86,652.88x = 6,746,238,618.27
  5. Step 5: Solve for x
    x = 6,746,238,618.27/86,652.88
  6. Step 6: Final answer
    x = 77,853.60

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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.