Home / 76,587.12-105,699.72-43,053.12

Finding the Fourth Proportional to 76,587.12, 105,699.72 and 43,053.12

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Solution

The fourth proportional to 76,587.12, 105,699.72 and 43,053.12 is: 59,418.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,587.12 : 105,699.72 = 43,053.12 : x
  2. Step 2: Convert to fraction form
    76,587.12/105,699.72 = 43,053.12/x
  3. Step 3: Cross multiply
    76,587.12x = 105,699.72 × 43,053.12
  4. Step 4: Simplify right side
    76,587.12x = 4,550,702,729.13
  5. Step 5: Solve for x
    x = 4,550,702,729.13/76,587.12
  6. Step 6: Final answer
    x = 59,418.64

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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.