Home / 102,951.74-142,075.80-57,628.59

Finding the Fourth Proportional to 102,951.74, 142,075.80 and 57,628.59

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Solution

The fourth proportional to 102,951.74, 142,075.80 and 57,628.59 is: 79,528.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,951.74 : 142,075.80 = 57,628.59 : x
  2. Step 2: Convert to fraction form
    102,951.74/142,075.80 = 57,628.59/x
  3. Step 3: Cross multiply
    102,951.74x = 142,075.80 × 57,628.59
  4. Step 4: Simplify right side
    102,951.74x = 8,187,628,027.12
  5. Step 5: Solve for x
    x = 8,187,628,027.12/102,951.74
  6. Step 6: Final answer
    x = 79,528.80

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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.