Home / 86,698.10-130,021.23-45,122.42

Finding the Fourth Proportional to 86,698.10, 130,021.23 and 45,122.42

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Solution

The fourth proportional to 86,698.10, 130,021.23 and 45,122.42 is: 67,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,698.10 : 130,021.23 = 45,122.42 : x
  2. Step 2: Convert to fraction form
    86,698.10/130,021.23 = 45,122.42/x
  3. Step 3: Cross multiply
    86,698.10x = 130,021.23 × 45,122.42
  4. Step 4: Simplify right side
    86,698.10x = 5,866,872,548.98
  5. Step 5: Solve for x
    x = 5,866,872,548.98/86,698.10
  6. Step 6: Final answer
    x = 67,670.14

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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.