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Finding the Fourth Proportional to 86,667.68, 129,800.64 and 63,236

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Solution

The fourth proportional to 86,667.68, 129,800.64 and 63,236 is: 94,707.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,667.68 : 129,800.64 = 63,236 : x
  2. Step 2: Convert to fraction form
    86,667.68/129,800.64 = 63,236/x
  3. Step 3: Cross multiply
    86,667.68x = 129,800.64 × 63,236
  4. Step 4: Simplify right side
    86,667.68x = 8,208,073,271.04
  5. Step 5: Solve for x
    x = 8,208,073,271.04/86,667.68
  6. Step 6: Final answer
    x = 94,707.43

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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.