Home / 66,178.68-91,289.62-40,667.34

Finding the Fourth Proportional to 66,178.68, 91,289.62 and 40,667.34

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Solution

The fourth proportional to 66,178.68, 91,289.62 and 40,667.34 is: 56,098.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,178.68 : 91,289.62 = 40,667.34 : x
  2. Step 2: Convert to fraction form
    66,178.68/91,289.62 = 40,667.34/x
  3. Step 3: Cross multiply
    66,178.68x = 91,289.62 × 40,667.34
  4. Step 4: Simplify right side
    66,178.68x = 3,712,506,015.01
  5. Step 5: Solve for x
    x = 3,712,506,015.01/66,178.68
  6. Step 6: Final answer
    x = 56,098.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.