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Finding the Fourth Proportional to 86,680.98, 130,014.99 and 31,276.98

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Solution

The fourth proportional to 86,680.98, 130,014.99 and 31,276.98 is: 46,913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,680.98 : 130,014.99 = 31,276.98 : x
  2. Step 2: Convert to fraction form
    86,680.98/130,014.99 = 31,276.98/x
  3. Step 3: Cross multiply
    86,680.98x = 130,014.99 × 31,276.98
  4. Step 4: Simplify right side
    86,680.98x = 4,066,476,241.93
  5. Step 5: Solve for x
    x = 4,066,476,241.93/86,680.98
  6. Step 6: Final answer
    x = 46,913.13

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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.