Home / 90,124.42-135,102.96-42,761.77

Finding the Fourth Proportional to 90,124.42, 135,102.96 and 42,761.77

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Solution

The fourth proportional to 90,124.42, 135,102.96 and 42,761.77 is: 64,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,124.42 : 135,102.96 = 42,761.77 : x
  2. Step 2: Convert to fraction form
    90,124.42/135,102.96 = 42,761.77/x
  3. Step 3: Cross multiply
    90,124.42x = 135,102.96 × 42,761.77
  4. Step 4: Simplify right side
    90,124.42x = 5,777,241,701.84
  5. Step 5: Solve for x
    x = 5,777,241,701.84/90,124.42
  6. Step 6: Final answer
    x = 64,102.96

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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.