Home / 76,106.94-105,027.75-42,117.90

Finding the Fourth Proportional to 76,106.94, 105,027.75 and 42,117.90

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Solution

The fourth proportional to 76,106.94, 105,027.75 and 42,117.90 is: 58,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,106.94 : 105,027.75 = 42,117.90 : x
  2. Step 2: Convert to fraction form
    76,106.94/105,027.75 = 42,117.90/x
  3. Step 3: Cross multiply
    76,106.94x = 105,027.75 × 42,117.90
  4. Step 4: Simplify right side
    76,106.94x = 4,423,548,271.73
  5. Step 5: Solve for x
    x = 4,423,548,271.73/76,106.94
  6. Step 6: Final answer
    x = 58,122.80

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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.