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Finding the Fourth Proportional to 48,419.71, 72,615.42 and 18,830.50

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Solution

The fourth proportional to 48,419.71, 72,615.42 and 18,830.50 is: 28,240.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,419.71 : 72,615.42 = 18,830.50 : x
  2. Step 2: Convert to fraction form
    48,419.71/72,615.42 = 18,830.50/x
  3. Step 3: Cross multiply
    48,419.71x = 72,615.42 × 18,830.50
  4. Step 4: Simplify right side
    48,419.71x = 1,367,384,484.77
  5. Step 5: Solve for x
    x = 1,367,384,484.77/48,419.71
  6. Step 6: Final answer
    x = 28,240.25

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1.5x scale

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.