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Finding the Fourth Proportional to 86,667.70, 119,657.01 and 70,790.26

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Solution

The fourth proportional to 86,667.70, 119,657.01 and 70,790.26 is: 97,735.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667.70 : 119,657.01 = 70,790.26 : x
  2. Step 2: Convert to fraction form
    86,667.70/119,657.01 = 70,790.26/x
  3. Step 3: Cross multiply
    86,667.70x = 119,657.01 × 70,790.26
  4. Step 4: Simplify right side
    86,667.70x = 8,470,550,848.72
  5. Step 5: Solve for x
    x = 8,470,550,848.72/86,667.70
  6. Step 6: Final answer
    x = 97,735.96

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1.5x scale

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.