Home / 76,534.66-105,611.76-42,540.48

Finding the Fourth Proportional to 76,534.66, 105,611.76 and 42,540.48

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Solution

The fourth proportional to 76,534.66, 105,611.76 and 42,540.48 is: 58,702.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,534.66 : 105,611.76 = 42,540.48 : x
  2. Step 2: Convert to fraction form
    76,534.66/105,611.76 = 42,540.48/x
  3. Step 3: Cross multiply
    76,534.66x = 105,611.76 × 42,540.48
  4. Step 4: Simplify right side
    76,534.66x = 4,492,774,964.04
  5. Step 5: Solve for x
    x = 4,492,774,964.04/76,534.66
  6. Step 6: Final answer
    x = 58,702.49

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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.