Home / 86,820.63-130,247.15-39,439.05

Finding the Fourth Proportional to 86,820.63, 130,247.15 and 39,439.05

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Solution

The fourth proportional to 86,820.63, 130,247.15 and 39,439.05 is: 59,165.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,820.63 : 130,247.15 = 39,439.05 : x
  2. Step 2: Convert to fraction form
    86,820.63/130,247.15 = 39,439.05/x
  3. Step 3: Cross multiply
    86,820.63x = 130,247.15 × 39,439.05
  4. Step 4: Simplify right side
    86,820.63x = 5,136,823,664.01
  5. Step 5: Solve for x
    x = 5,136,823,664.01/86,820.63
  6. Step 6: Final answer
    x = 59,165.93

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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.