Home / 76,646.10-105,742.26-56,550.93

Finding the Fourth Proportional to 76,646.10, 105,742.26 and 56,550.93

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Solution

The fourth proportional to 76,646.10, 105,742.26 and 56,550.93 is: 78,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,646.10 : 105,742.26 = 56,550.93 : x
  2. Step 2: Convert to fraction form
    76,646.10/105,742.26 = 56,550.93/x
  3. Step 3: Cross multiply
    76,646.10x = 105,742.26 × 56,550.93
  4. Step 4: Simplify right side
    76,646.10x = 5,979,823,143.30
  5. Step 5: Solve for x
    x = 5,979,823,143.30/76,646.10
  6. Step 6: Final answer
    x = 78,018.62

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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.