Home / 76,306.86-105,302.84-42,315.41

Finding the Fourth Proportional to 76,306.86, 105,302.84 and 42,315.41

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Solution

The fourth proportional to 76,306.86, 105,302.84 and 42,315.41 is: 58,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,306.86 : 105,302.84 = 42,315.41 : x
  2. Step 2: Convert to fraction form
    76,306.86/105,302.84 = 42,315.41/x
  3. Step 3: Cross multiply
    76,306.86x = 105,302.84 × 42,315.41
  4. Step 4: Simplify right side
    76,306.86x = 4,455,932,900.44
  5. Step 5: Solve for x
    x = 4,455,932,900.44/76,306.86
  6. Step 6: Final answer
    x = 58,394.92

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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.