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Finding the Fourth Proportional to 45,871.60, 68,818.28 and 14,280.20

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Solution

The fourth proportional to 45,871.60, 68,818.28 and 14,280.20 is: 21,423.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,871.60 : 68,818.28 = 14,280.20 : x
  2. Step 2: Convert to fraction form
    45,871.60/68,818.28 = 14,280.20/x
  3. Step 3: Cross multiply
    45,871.60x = 68,818.28 × 14,280.20
  4. Step 4: Simplify right side
    45,871.60x = 982,738,802.06
  5. Step 5: Solve for x
    x = 982,738,802.06/45,871.60
  6. Step 6: Final answer
    x = 21,423.69

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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.