Home / 76,205.89-105,215.47-47,569.15

Finding the Fourth Proportional to 76,205.89, 105,215.47 and 47,569.15

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Solution

The fourth proportional to 76,205.89, 105,215.47 and 47,569.15 is: 65,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,205.89 : 105,215.47 = 47,569.15 : x
  2. Step 2: Convert to fraction form
    76,205.89/105,215.47 = 47,569.15/x
  3. Step 3: Cross multiply
    76,205.89x = 105,215.47 × 47,569.15
  4. Step 4: Simplify right side
    76,205.89x = 5,005,010,474.75
  5. Step 5: Solve for x
    x = 5,005,010,474.75/76,205.89
  6. Step 6: Final answer
    x = 65,677.48

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1.5x scale

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.