Home / 86,696.10-130,018.23-45,120.42

Finding the Fourth Proportional to 86,696.10, 130,018.23 and 45,120.42

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Solution

The fourth proportional to 86,696.10, 130,018.23 and 45,120.42 is: 67,667.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,696.10 : 130,018.23 = 45,120.42 : x
  2. Step 2: Convert to fraction form
    86,696.10/130,018.23 = 45,120.42/x
  3. Step 3: Cross multiply
    86,696.10x = 130,018.23 × 45,120.42
  4. Step 4: Simplify right side
    86,696.10x = 5,866,477,145.26
  5. Step 5: Solve for x
    x = 5,866,477,145.26/86,696.10
  6. Step 6: Final answer
    x = 67,667.14

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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.