Home / 86,717.21-130,073.78-39,970.08

Finding the Fourth Proportional to 86,717.21, 130,073.78 and 39,970.08

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Solution

The fourth proportional to 86,717.21, 130,073.78 and 39,970.08 is: 59,954.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,717.21 : 130,073.78 = 39,970.08 : x
  2. Step 2: Convert to fraction form
    86,717.21/130,073.78 = 39,970.08/x
  3. Step 3: Cross multiply
    86,717.21x = 130,073.78 × 39,970.08
  4. Step 4: Simplify right side
    86,717.21x = 5,199,059,192.65
  5. Step 5: Solve for x
    x = 5,199,059,192.65/86,717.21
  6. Step 6: Final answer
    x = 59,954.18

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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.