Home / 103,855.24-155,805.90-48,421

Finding the Fourth Proportional to 103,855.24, 155,805.90 and 48,421

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Solution

The fourth proportional to 103,855.24, 155,805.90 and 48,421 is: 72,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.24 : 155,805.90 = 48,421 : x
  2. Step 2: Convert to fraction form
    103,855.24/155,805.90 = 48,421/x
  3. Step 3: Cross multiply
    103,855.24x = 155,805.90 × 48,421
  4. Step 4: Simplify right side
    103,855.24x = 7,544,277,483.90
  5. Step 5: Solve for x
    x = 7,544,277,483.90/103,855.24
  6. Step 6: Final answer
    x = 72,642.24

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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.