Home / 76,553.11-105,646.81-42,565.09

Finding the Fourth Proportional to 76,553.11, 105,646.81 and 42,565.09

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Solution

The fourth proportional to 76,553.11, 105,646.81 and 42,565.09 is: 58,741.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,553.11 : 105,646.81 = 42,565.09 : x
  2. Step 2: Convert to fraction form
    76,553.11/105,646.81 = 42,565.09/x
  3. Step 3: Cross multiply
    76,553.11x = 105,646.81 × 42,565.09
  4. Step 4: Simplify right side
    76,553.11x = 4,496,865,447.63
  5. Step 5: Solve for x
    x = 4,496,865,447.63/76,553.11
  6. Step 6: Final answer
    x = 58,741.77

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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.