Home / 57,216.07-85,827.89-19,779.76

Finding the Fourth Proportional to 57,216.07, 85,827.89 and 19,779.76

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Solution

The fourth proportional to 57,216.07, 85,827.89 and 19,779.76 is: 29,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,216.07 : 85,827.89 = 19,779.76 : x
  2. Step 2: Convert to fraction form
    57,216.07/85,827.89 = 19,779.76/x
  3. Step 3: Cross multiply
    57,216.07x = 85,827.89 × 19,779.76
  4. Step 4: Simplify right side
    57,216.07x = 1,697,655,110.98
  5. Step 5: Solve for x
    x = 1,697,655,110.98/57,216.07
  6. Step 6: Final answer
    x = 29,670.95

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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.