Home / 76,720.34-105,869.95-42,263.94

Finding the Fourth Proportional to 76,720.34, 105,869.95 and 42,263.94

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Solution

The fourth proportional to 76,720.34, 105,869.95 and 42,263.94 is: 58,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,720.34 : 105,869.95 = 42,263.94 : x
  2. Step 2: Convert to fraction form
    76,720.34/105,869.95 = 42,263.94/x
  3. Step 3: Cross multiply
    76,720.34x = 105,869.95 × 42,263.94
  4. Step 4: Simplify right side
    76,720.34x = 4,474,481,029.70
  5. Step 5: Solve for x
    x = 4,474,481,029.70/76,720.34
  6. Step 6: Final answer
    x = 58,321.97

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1.5x scale

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.