Home / 90,125.42-135,104.46-42,762.77

Finding the Fourth Proportional to 90,125.42, 135,104.46 and 42,762.77

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Solution

The fourth proportional to 90,125.42, 135,104.46 and 42,762.77 is: 64,104.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,125.42 : 135,104.46 = 42,762.77 : x
  2. Step 2: Convert to fraction form
    90,125.42/135,104.46 = 42,762.77/x
  3. Step 3: Cross multiply
    90,125.42x = 135,104.46 × 42,762.77
  4. Step 4: Simplify right side
    90,125.42x = 5,777,440,948.95
  5. Step 5: Solve for x
    x = 5,777,440,948.95/90,125.42
  6. Step 6: Final answer
    x = 64,104.46

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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.