Home / 78,761.16-118,142.18-19,596.84

Finding the Fourth Proportional to 78,761.16, 118,142.18 and 19,596.84

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Solution

The fourth proportional to 78,761.16, 118,142.18 and 19,596.84 is: 29,395.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,761.16 : 118,142.18 = 19,596.84 : x
  2. Step 2: Convert to fraction form
    78,761.16/118,142.18 = 19,596.84/x
  3. Step 3: Cross multiply
    78,761.16x = 118,142.18 × 19,596.84
  4. Step 4: Simplify right side
    78,761.16x = 2,315,213,398.71
  5. Step 5: Solve for x
    x = 2,315,213,398.71/78,761.16
  6. Step 6: Final answer
    x = 29,395.37

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1.5x scale

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.