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Finding the Fourth Proportional to 86,827.70, 130,144.35 and 49,405.70

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Solution

The fourth proportional to 86,827.70, 130,144.35 and 49,405.70 is: 74,053.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,827.70 : 130,144.35 = 49,405.70 : x
  2. Step 2: Convert to fraction form
    86,827.70/130,144.35 = 49,405.70/x
  3. Step 3: Cross multiply
    86,827.70x = 130,144.35 × 49,405.70
  4. Step 4: Simplify right side
    86,827.70x = 6,429,872,712.80
  5. Step 5: Solve for x
    x = 6,429,872,712.80/86,827.70
  6. Step 6: Final answer
    x = 74,053.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.