Home / 56,357.28-77,778.32-31,211.68

Finding the Fourth Proportional to 56,357.28, 77,778.32 and 31,211.68

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Solution

The fourth proportional to 56,357.28, 77,778.32 and 31,211.68 is: 43,075.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,357.28 : 77,778.32 = 31,211.68 : x
  2. Step 2: Convert to fraction form
    56,357.28/77,778.32 = 31,211.68/x
  3. Step 3: Cross multiply
    56,357.28x = 77,778.32 × 31,211.68
  4. Step 4: Simplify right side
    56,357.28x = 2,427,592,034.78
  5. Step 5: Solve for x
    x = 2,427,592,034.78/56,357.28
  6. Step 6: Final answer
    x = 43,075.04

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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.