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Finding the Fourth Proportional to 103,250.84, 142,483.91 and 57,928.01

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Solution

The fourth proportional to 103,250.84, 142,483.91 and 57,928.01 is: 79,939.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,250.84 : 142,483.91 = 57,928.01 : x
  2. Step 2: Convert to fraction form
    103,250.84/142,483.91 = 57,928.01/x
  3. Step 3: Cross multiply
    103,250.84x = 142,483.91 × 57,928.01
  4. Step 4: Simplify right side
    103,250.84x = 8,253,808,361.26
  5. Step 5: Solve for x
    x = 8,253,808,361.26/103,250.84
  6. Step 6: Final answer
    x = 79,939.39

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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.