Home / 90,302.04-135,408.41-52,871.54

Finding the Fourth Proportional to 90,302.04, 135,408.41 and 52,871.54

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Solution

The fourth proportional to 90,302.04, 135,408.41 and 52,871.54 is: 79,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,302.04 : 135,408.41 = 52,871.54 : x
  2. Step 2: Convert to fraction form
    90,302.04/135,408.41 = 52,871.54/x
  3. Step 3: Cross multiply
    90,302.04x = 135,408.41 × 52,871.54
  4. Step 4: Simplify right side
    90,302.04x = 7,159,250,422.52
  5. Step 5: Solve for x
    x = 7,159,250,422.52/90,302.04
  6. Step 6: Final answer
    x = 79,281.16

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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.