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Finding the Fourth Proportional to 86,773.86, 130,127.94 and 47,309.49

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Solution

The fourth proportional to 86,773.86, 130,127.94 and 47,309.49 is: 70,946.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,773.86 : 130,127.94 = 47,309.49 : x
  2. Step 2: Convert to fraction form
    86,773.86/130,127.94 = 47,309.49/x
  3. Step 3: Cross multiply
    86,773.86x = 130,127.94 × 47,309.49
  4. Step 4: Simplify right side
    86,773.86x = 6,156,286,476.15
  5. Step 5: Solve for x
    x = 6,156,286,476.15/86,773.86
  6. Step 6: Final answer
    x = 70,946.33

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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.