Home / 51,390.90-70,916.54-28,725.38

Finding the Fourth Proportional to 51,390.90, 70,916.54 and 28,725.38

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Solution

The fourth proportional to 51,390.90, 70,916.54 and 28,725.38 is: 39,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.90 : 70,916.54 = 28,725.38 : x
  2. Step 2: Convert to fraction form
    51,390.90/70,916.54 = 28,725.38/x
  3. Step 3: Cross multiply
    51,390.90x = 70,916.54 × 28,725.38
  4. Step 4: Simplify right side
    51,390.90x = 2,037,104,061.58
  5. Step 5: Solve for x
    x = 2,037,104,061.58/51,390.90
  6. Step 6: Final answer
    x = 39,639.39

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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.