Home / 57,486.84-79,381.62-42,405.60

Finding the Fourth Proportional to 57,486.84, 79,381.62 and 42,405.60

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Solution

The fourth proportional to 57,486.84, 79,381.62 and 42,405.60 is: 58,556.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,486.84 : 79,381.62 = 42,405.60 : x
  2. Step 2: Convert to fraction form
    57,486.84/79,381.62 = 42,405.60/x
  3. Step 3: Cross multiply
    57,486.84x = 79,381.62 × 42,405.60
  4. Step 4: Simplify right side
    57,486.84x = 3,366,225,225.07
  5. Step 5: Solve for x
    x = 3,366,225,225.07/57,486.84
  6. Step 6: Final answer
    x = 58,556.45

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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.