Home / 76,373.81-105,393.07-42,383.78

Finding the Fourth Proportional to 76,373.81, 105,393.07 and 42,383.78

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Solution

The fourth proportional to 76,373.81, 105,393.07 and 42,383.78 is: 58,488.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,373.81 : 105,393.07 = 42,383.78 : x
  2. Step 2: Convert to fraction form
    76,373.81/105,393.07 = 42,383.78/x
  3. Step 3: Cross multiply
    76,373.81x = 105,393.07 × 42,383.78
  4. Step 4: Simplify right side
    76,373.81x = 4,466,956,692.40
  5. Step 5: Solve for x
    x = 4,466,956,692.40/76,373.81
  6. Step 6: Final answer
    x = 58,488.07

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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.