Home / 86,455.26-129,698.58-42,082.08

Finding the Fourth Proportional to 86,455.26, 129,698.58 and 42,082.08

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Solution

The fourth proportional to 86,455.26, 129,698.58 and 42,082.08 is: 63,130.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,455.26 : 129,698.58 = 42,082.08 : x
  2. Step 2: Convert to fraction form
    86,455.26/129,698.58 = 42,082.08/x
  3. Step 3: Cross multiply
    86,455.26x = 129,698.58 × 42,082.08
  4. Step 4: Simplify right side
    86,455.26x = 5,457,986,019.45
  5. Step 5: Solve for x
    x = 5,457,986,019.45/86,455.26
  6. Step 6: Final answer
    x = 63,130.76

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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.