Home / 85,779.04-128,623.56-35,849.92

Finding the Fourth Proportional to 85,779.04, 128,623.56 and 35,849.92

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Solution

The fourth proportional to 85,779.04, 128,623.56 and 35,849.92 is: 53,756.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,779.04 : 128,623.56 = 35,849.92 : x
  2. Step 2: Convert to fraction form
    85,779.04/128,623.56 = 35,849.92/x
  3. Step 3: Cross multiply
    85,779.04x = 128,623.56 × 35,849.92
  4. Step 4: Simplify right side
    85,779.04x = 4,611,144,336.12
  5. Step 5: Solve for x
    x = 4,611,144,336.12/85,779.04
  6. Step 6: Final answer
    x = 53,756.07

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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.