Home / 76,693.11-105,835.63-42,700.86

Finding the Fourth Proportional to 76,693.11, 105,835.63 and 42,700.86

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Solution

The fourth proportional to 76,693.11, 105,835.63 and 42,700.86 is: 58,926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,693.11 : 105,835.63 = 42,700.86 : x
  2. Step 2: Convert to fraction form
    76,693.11/105,835.63 = 42,700.86/x
  3. Step 3: Cross multiply
    76,693.11x = 105,835.63 × 42,700.86
  4. Step 4: Simplify right side
    76,693.11x = 4,519,272,419.64
  5. Step 5: Solve for x
    x = 4,519,272,419.64/76,693.11
  6. Step 6: Final answer
    x = 58,926.71

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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.