Home / 45,987.40-68,981.10-16,438.60

Finding the Fourth Proportional to 45,987.40, 68,981.10 and 16,438.60

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Solution

The fourth proportional to 45,987.40, 68,981.10 and 16,438.60 is: 24,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,987.40 : 68,981.10 = 16,438.60 : x
  2. Step 2: Convert to fraction form
    45,987.40/68,981.10 = 16,438.60/x
  3. Step 3: Cross multiply
    45,987.40x = 68,981.10 × 16,438.60
  4. Step 4: Simplify right side
    45,987.40x = 1,133,952,710.46
  5. Step 5: Solve for x
    x = 1,133,952,710.46/45,987.40
  6. Step 6: Final answer
    x = 24,657.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.