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Finding the Fourth Proportional to 58,075.99, 87,079.13 and 20,112.75

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Solution

The fourth proportional to 58,075.99, 87,079.13 and 20,112.75 is: 30,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,075.99 : 87,079.13 = 20,112.75 : x
  2. Step 2: Convert to fraction form
    58,075.99/87,079.13 = 20,112.75/x
  3. Step 3: Cross multiply
    58,075.99x = 87,079.13 × 20,112.75
  4. Step 4: Simplify right side
    58,075.99x = 1,751,400,671.34
  5. Step 5: Solve for x
    x = 1,751,400,671.34/58,075.99
  6. Step 6: Final answer
    x = 30,157.05

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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.