Home / 56,653.56-78,140.70-38,729.88

Finding the Fourth Proportional to 56,653.56, 78,140.70 and 38,729.88

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Solution

The fourth proportional to 56,653.56, 78,140.70 and 38,729.88 is: 53,419.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,653.56 : 78,140.70 = 38,729.88 : x
  2. Step 2: Convert to fraction form
    56,653.56/78,140.70 = 38,729.88/x
  3. Step 3: Cross multiply
    56,653.56x = 78,140.70 × 38,729.88
  4. Step 4: Simplify right side
    56,653.56x = 3,026,379,934.12
  5. Step 5: Solve for x
    x = 3,026,379,934.12/56,653.56
  6. Step 6: Final answer
    x = 53,419.06

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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.