Home / 105,586.92-145,710-57,840.36

Finding the Fourth Proportional to 105,586.92, 145,710 and 57,840.36

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Solution

The fourth proportional to 105,586.92, 145,710 and 57,840.36 is: 79,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,586.92 : 145,710 = 57,840.36 : x
  2. Step 2: Convert to fraction form
    105,586.92/145,710 = 57,840.36/x
  3. Step 3: Cross multiply
    105,586.92x = 145,710 × 57,840.36
  4. Step 4: Simplify right side
    105,586.92x = 8,427,918,855.60
  5. Step 5: Solve for x
    x = 8,427,918,855.60/105,586.92
  6. Step 6: Final answer
    x = 79,819.72

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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.