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Finding the Fourth Proportional to 86,675.71, 130,038.34 and 51,169.42

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Solution

The fourth proportional to 86,675.71, 130,038.34 and 51,169.42 is: 76,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,675.71 : 130,038.34 = 51,169.42 : x
  2. Step 2: Convert to fraction form
    86,675.71/130,038.34 = 51,169.42/x
  3. Step 3: Cross multiply
    86,675.71x = 130,038.34 × 51,169.42
  4. Step 4: Simplify right side
    86,675.71x = 6,653,986,422.22
  5. Step 5: Solve for x
    x = 6,653,986,422.22/86,675.71
  6. Step 6: Final answer
    x = 76,768.76

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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.