Home / 78,686.20-118,051.20-34,316.84

Finding the Fourth Proportional to 78,686.20, 118,051.20 and 34,316.84

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Solution

The fourth proportional to 78,686.20, 118,051.20 and 34,316.84 is: 51,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,686.20 : 118,051.20 = 34,316.84 : x
  2. Step 2: Convert to fraction form
    78,686.20/118,051.20 = 34,316.84/x
  3. Step 3: Cross multiply
    78,686.20x = 118,051.20 × 34,316.84
  4. Step 4: Simplify right side
    78,686.20x = 4,051,144,142.21
  5. Step 5: Solve for x
    x = 4,051,144,142.21/78,686.20
  6. Step 6: Final answer
    x = 51,484.81

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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.