Home / 55,779.04-76,975.68-30,628

Finding the Fourth Proportional to 55,779.04, 76,975.68 and 30,628

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Solution

The fourth proportional to 55,779.04, 76,975.68 and 30,628 is: 42,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,779.04 : 76,975.68 = 30,628 : x
  2. Step 2: Convert to fraction form
    55,779.04/76,975.68 = 30,628/x
  3. Step 3: Cross multiply
    55,779.04x = 76,975.68 × 30,628
  4. Step 4: Simplify right side
    55,779.04x = 2,357,611,127.04
  5. Step 5: Solve for x
    x = 2,357,611,127.04/55,779.04
  6. Step 6: Final answer
    x = 42,266.97

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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.