Home / 66,431.07-99,660.27-26,988.12

Finding the Fourth Proportional to 66,431.07, 99,660.27 and 26,988.12

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Solution

The fourth proportional to 66,431.07, 99,660.27 and 26,988.12 is: 40,487.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,431.07 : 99,660.27 = 26,988.12 : x
  2. Step 2: Convert to fraction form
    66,431.07/99,660.27 = 26,988.12/x
  3. Step 3: Cross multiply
    66,431.07x = 99,660.27 × 26,988.12
  4. Step 4: Simplify right side
    66,431.07x = 2,689,643,325.99
  5. Step 5: Solve for x
    x = 2,689,643,325.99/66,431.07
  6. Step 6: Final answer
    x = 40,487.73

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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.