Home / 55,788.58-76,988.15-30,638.08

Finding the Fourth Proportional to 55,788.58, 76,988.15 and 30,638.08

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Solution

The fourth proportional to 55,788.58, 76,988.15 and 30,638.08 is: 42,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,788.58 : 76,988.15 = 30,638.08 : x
  2. Step 2: Convert to fraction form
    55,788.58/76,988.15 = 30,638.08/x
  3. Step 3: Cross multiply
    55,788.58x = 76,988.15 × 30,638.08
  4. Step 4: Simplify right side
    55,788.58x = 2,358,769,271.58
  5. Step 5: Solve for x
    x = 2,358,769,271.58/55,788.58
  6. Step 6: Final answer
    x = 42,280.50

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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.