Home / 77,742.12-116,557-30,317.04

Finding the Fourth Proportional to 77,742.12, 116,557 and 30,317.04

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Solution

The fourth proportional to 77,742.12, 116,557 and 30,317.04 is: 45,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,742.12 : 116,557 = 30,317.04 : x
  2. Step 2: Convert to fraction form
    77,742.12/116,557 = 30,317.04/x
  3. Step 3: Cross multiply
    77,742.12x = 116,557 × 30,317.04
  4. Step 4: Simplify right side
    77,742.12x = 3,533,663,231.28
  5. Step 5: Solve for x
    x = 3,533,663,231.28/77,742.12
  6. Step 6: Final answer
    x = 45,453.65

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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.