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Finding the Fourth Proportional to 86,869.70, 130,207.35 and 49,447.70

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Solution

The fourth proportional to 86,869.70, 130,207.35 and 49,447.70 is: 74,116.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,869.70 : 130,207.35 = 49,447.70 : x
  2. Step 2: Convert to fraction form
    86,869.70/130,207.35 = 49,447.70/x
  3. Step 3: Cross multiply
    86,869.70x = 130,207.35 × 49,447.70
  4. Step 4: Simplify right side
    86,869.70x = 6,438,453,980.60
  5. Step 5: Solve for x
    x = 6,438,453,980.60/86,869.70
  6. Step 6: Final answer
    x = 74,116.22

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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.