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Finding the Fourth Proportional to 51,883.40, 71,602.58 and 28,916.80

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Solution

The fourth proportional to 51,883.40, 71,602.58 and 28,916.80 is: 39,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,883.40 : 71,602.58 = 28,916.80 : x
  2. Step 2: Convert to fraction form
    51,883.40/71,602.58 = 28,916.80/x
  3. Step 3: Cross multiply
    51,883.40x = 71,602.58 × 28,916.80
  4. Step 4: Simplify right side
    51,883.40x = 2,070,517,378.63
  5. Step 5: Solve for x
    x = 2,070,517,378.63/51,883.40
  6. Step 6: Final answer
    x = 39,907.12

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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.