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Finding the Fourth Proportional to 86,995.63, 130,400.15 and 56,998.54

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Solution

The fourth proportional to 86,995.63, 130,400.15 and 56,998.54 is: 85,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,995.63 : 130,400.15 = 56,998.54 : x
  2. Step 2: Convert to fraction form
    86,995.63/130,400.15 = 56,998.54/x
  3. Step 3: Cross multiply
    86,995.63x = 130,400.15 × 56,998.54
  4. Step 4: Simplify right side
    86,995.63x = 7,432,617,513.78
  5. Step 5: Solve for x
    x = 7,432,617,513.78/86,995.63
  6. Step 6: Final answer
    x = 85,436.68

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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.