Home / 58,779.91-81,141.11-39,685.56

Finding the Fourth Proportional to 58,779.91, 81,141.11 and 39,685.56

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Solution

The fourth proportional to 58,779.91, 81,141.11 and 39,685.56 is: 54,782.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,779.91 : 81,141.11 = 39,685.56 : x
  2. Step 2: Convert to fraction form
    58,779.91/81,141.11 = 39,685.56/x
  3. Step 3: Cross multiply
    58,779.91x = 81,141.11 × 39,685.56
  4. Step 4: Simplify right side
    58,779.91x = 3,220,130,389.37
  5. Step 5: Solve for x
    x = 3,220,130,389.37/58,779.91
  6. Step 6: Final answer
    x = 54,782.84

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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.