Home / 54,915.16-75,756.72-39,783.28

Finding the Fourth Proportional to 54,915.16, 75,756.72 and 39,783.28

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Solution

The fourth proportional to 54,915.16, 75,756.72 and 39,783.28 is: 54,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,915.16 : 75,756.72 = 39,783.28 : x
  2. Step 2: Convert to fraction form
    54,915.16/75,756.72 = 39,783.28/x
  3. Step 3: Cross multiply
    54,915.16x = 75,756.72 × 39,783.28
  4. Step 4: Simplify right side
    54,915.16x = 3,013,850,803.64
  5. Step 5: Solve for x
    x = 3,013,850,803.64/54,915.16
  6. Step 6: Final answer
    x = 54,881.95

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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.