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Finding the Fourth Proportional to 48,894, 67,478.04 and 28,740.76

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Solution

The fourth proportional to 48,894, 67,478.04 and 28,740.76 is: 39,664.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,894 : 67,478.04 = 28,740.76 : x
  2. Step 2: Convert to fraction form
    48,894/67,478.04 = 28,740.76/x
  3. Step 3: Cross multiply
    48,894x = 67,478.04 × 28,740.76
  4. Step 4: Simplify right side
    48,894x = 1,939,370,152.91
  5. Step 5: Solve for x
    x = 1,939,370,152.91/48,894
  6. Step 6: Final answer
    x = 39,664.79

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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.