Home / 52,464.40-78,706.20-21,302.80

Finding the Fourth Proportional to 52,464.40, 78,706.20 and 21,302.80

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Solution

The fourth proportional to 52,464.40, 78,706.20 and 21,302.80 is: 31,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,464.40 : 78,706.20 = 21,302.80 : x
  2. Step 2: Convert to fraction form
    52,464.40/78,706.20 = 21,302.80/x
  3. Step 3: Cross multiply
    52,464.40x = 78,706.20 × 21,302.80
  4. Step 4: Simplify right side
    52,464.40x = 1,676,662,437.36
  5. Step 5: Solve for x
    x = 1,676,662,437.36/52,464.40
  6. Step 6: Final answer
    x = 31,958.10

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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.