Home / 30,075.90-45,116.17-10,085.43

Finding the Fourth Proportional to 30,075.90, 45,116.17 and 10,085.43

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Solution

The fourth proportional to 30,075.90, 45,116.17 and 10,085.43 is: 15,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,075.90 : 45,116.17 = 10,085.43 : x
  2. Step 2: Convert to fraction form
    30,075.90/45,116.17 = 10,085.43/x
  3. Step 3: Cross multiply
    30,075.90x = 45,116.17 × 10,085.43
  4. Step 4: Simplify right side
    30,075.90x = 455,015,974.40
  5. Step 5: Solve for x
    x = 455,015,974.40/30,075.90
  6. Step 6: Final answer
    x = 15,128.92

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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.