Home / 86,516.40-129,798.90-42,144.60

Finding the Fourth Proportional to 86,516.40, 129,798.90 and 42,144.60

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Solution

The fourth proportional to 86,516.40, 129,798.90 and 42,144.60 is: 63,228.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,516.40 : 129,798.90 = 42,144.60 : x
  2. Step 2: Convert to fraction form
    86,516.40/129,798.90 = 42,144.60/x
  3. Step 3: Cross multiply
    86,516.40x = 129,798.90 × 42,144.60
  4. Step 4: Simplify right side
    86,516.40x = 5,470,322,720.94
  5. Step 5: Solve for x
    x = 5,470,322,720.94/86,516.40
  6. Step 6: Final answer
    x = 63,228.74

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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.