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Finding the Fourth Proportional to 86,755.86, 130,100.99 and 47,291.45

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Solution

The fourth proportional to 86,755.86, 130,100.99 and 47,291.45 is: 70,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,755.86 : 130,100.99 = 47,291.45 : x
  2. Step 2: Convert to fraction form
    86,755.86/130,100.99 = 47,291.45/x
  3. Step 3: Cross multiply
    86,755.86x = 130,100.99 × 47,291.45
  4. Step 4: Simplify right side
    86,755.86x = 6,152,663,576.57
  5. Step 5: Solve for x
    x = 6,152,663,576.57/86,755.86
  6. Step 6: Final answer
    x = 70,919.29

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1.5x scale

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.