Home / 51,386.63-77,059.49-19,779.08

Finding the Fourth Proportional to 51,386.63, 77,059.49 and 19,779.08

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Solution

The fourth proportional to 51,386.63, 77,059.49 and 19,779.08 is: 29,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,386.63 : 77,059.49 = 19,779.08 : x
  2. Step 2: Convert to fraction form
    51,386.63/77,059.49 = 19,779.08/x
  3. Step 3: Cross multiply
    51,386.63x = 77,059.49 × 19,779.08
  4. Step 4: Simplify right side
    51,386.63x = 1,524,165,333.28
  5. Step 5: Solve for x
    x = 1,524,165,333.28/51,386.63
  6. Step 6: Final answer
    x = 29,660.74

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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.