Home / 58,172.40-87,240.10-18,720.32

Finding the Fourth Proportional to 58,172.40, 87,240.10 and 18,720.32

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Solution

The fourth proportional to 58,172.40, 87,240.10 and 18,720.32 is: 28,074.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,172.40 : 87,240.10 = 18,720.32 : x
  2. Step 2: Convert to fraction form
    58,172.40/87,240.10 = 18,720.32/x
  3. Step 3: Cross multiply
    58,172.40x = 87,240.10 × 18,720.32
  4. Step 4: Simplify right side
    58,172.40x = 1,633,162,588.83
  5. Step 5: Solve for x
    x = 1,633,162,588.83/58,172.40
  6. Step 6: Final answer
    x = 28,074.53

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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.