Home / 90,410.14-135,438.66-42,957.70

Finding the Fourth Proportional to 90,410.14, 135,438.66 and 42,957.70

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Solution

The fourth proportional to 90,410.14, 135,438.66 and 42,957.70 is: 64,352.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,410.14 : 135,438.66 = 42,957.70 : x
  2. Step 2: Convert to fraction form
    90,410.14/135,438.66 = 42,957.70/x
  3. Step 3: Cross multiply
    90,410.14x = 135,438.66 × 42,957.70
  4. Step 4: Simplify right side
    90,410.14x = 5,818,133,324.68
  5. Step 5: Solve for x
    x = 5,818,133,324.68/90,410.14
  6. Step 6: Final answer
    x = 64,352.66

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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.