Home / 78,059.38-117,041.61-30,617.62

Finding the Fourth Proportional to 78,059.38, 117,041.61 and 30,617.62

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Solution

The fourth proportional to 78,059.38, 117,041.61 and 30,617.62 is: 45,907.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,059.38 : 117,041.61 = 30,617.62 : x
  2. Step 2: Convert to fraction form
    78,059.38/117,041.61 = 30,617.62/x
  3. Step 3: Cross multiply
    78,059.38x = 117,041.61 × 30,617.62
  4. Step 4: Simplify right side
    78,059.38x = 3,583,535,539.17
  5. Step 5: Solve for x
    x = 3,583,535,539.17/78,059.38
  6. Step 6: Final answer
    x = 45,907.81

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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.