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Finding the Fourth Proportional to 86,044.60, 118,743.06 and 47,807.65

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Solution

The fourth proportional to 86,044.60, 118,743.06 and 47,807.65 is: 65,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,044.60 : 118,743.06 = 47,807.65 : x
  2. Step 2: Convert to fraction form
    86,044.60/118,743.06 = 47,807.65/x
  3. Step 3: Cross multiply
    86,044.60x = 118,743.06 × 47,807.65
  4. Step 4: Simplify right side
    86,044.60x = 5,676,826,652.41
  5. Step 5: Solve for x
    x = 5,676,826,652.41/86,044.60
  6. Step 6: Final answer
    x = 65,975.40

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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.