Home / 81,189.40-112,075.92-49,368.52

Finding the Fourth Proportional to 81,189.40, 112,075.92 and 49,368.52

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Solution

The fourth proportional to 81,189.40, 112,075.92 and 49,368.52 is: 68,149.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189.40 : 112,075.92 = 49,368.52 : x
  2. Step 2: Convert to fraction form
    81,189.40/112,075.92 = 49,368.52/x
  3. Step 3: Cross multiply
    81,189.40x = 112,075.92 × 49,368.52
  4. Step 4: Simplify right side
    81,189.40x = 5,533,022,298.04
  5. Step 5: Solve for x
    x = 5,533,022,298.04/81,189.40
  6. Step 6: Final answer
    x = 68,149.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.