Home / 56,217.12-77,576.64-31,065.12

Finding the Fourth Proportional to 56,217.12, 77,576.64 and 31,065.12

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Solution

The fourth proportional to 56,217.12, 77,576.64 and 31,065.12 is: 42,868.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,217.12 : 77,576.64 = 31,065.12 : x
  2. Step 2: Convert to fraction form
    56,217.12/77,576.64 = 31,065.12/x
  3. Step 3: Cross multiply
    56,217.12x = 77,576.64 × 31,065.12
  4. Step 4: Simplify right side
    56,217.12x = 2,409,927,630.80
  5. Step 5: Solve for x
    x = 2,409,927,630.80/56,217.12
  6. Step 6: Final answer
    x = 42,868.22

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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.