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Finding the Fourth Proportional to 48,855.07, 67,415.88 and 28,712.80

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Solution

The fourth proportional to 48,855.07, 67,415.88 and 28,712.80 is: 39,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,855.07 : 67,415.88 = 28,712.80 : x
  2. Step 2: Convert to fraction form
    48,855.07/67,415.88 = 28,712.80/x
  3. Step 3: Cross multiply
    48,855.07x = 67,415.88 × 28,712.80
  4. Step 4: Simplify right side
    48,855.07x = 1,935,698,679.26
  5. Step 5: Solve for x
    x = 1,935,698,679.26/48,855.07
  6. Step 6: Final answer
    x = 39,621.24

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1.5x scale

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.