Home / 78,687.18-118,029.84-47,106.06

Finding the Fourth Proportional to 78,687.18, 118,029.84 and 47,106.06

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Solution

The fourth proportional to 78,687.18, 118,029.84 and 47,106.06 is: 70,658.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,687.18 : 118,029.84 = 47,106.06 : x
  2. Step 2: Convert to fraction form
    78,687.18/118,029.84 = 47,106.06/x
  3. Step 3: Cross multiply
    78,687.18x = 118,029.84 × 47,106.06
  4. Step 4: Simplify right side
    78,687.18x = 5,559,920,724.83
  5. Step 5: Solve for x
    x = 5,559,920,724.83/78,687.18
  6. Step 6: Final answer
    x = 70,658.53

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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.