Home / 105,228.70-145,218.72-57,482.83

Finding the Fourth Proportional to 105,228.70, 145,218.72 and 57,482.83

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Solution

The fourth proportional to 105,228.70, 145,218.72 and 57,482.83 is: 79,328.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,228.70 : 145,218.72 = 57,482.83 : x
  2. Step 2: Convert to fraction form
    105,228.70/145,218.72 = 57,482.83/x
  3. Step 3: Cross multiply
    105,228.70x = 145,218.72 × 57,482.83
  4. Step 4: Simplify right side
    105,228.70x = 8,347,582,994.58
  5. Step 5: Solve for x
    x = 8,347,582,994.58/105,228.70
  6. Step 6: Final answer
    x = 79,328.01

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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.