Home / 85,688.60-118,213.62-51,677.74

Finding the Fourth Proportional to 85,688.60, 118,213.62 and 51,677.74

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Solution

The fourth proportional to 85,688.60, 118,213.62 and 51,677.74 is: 71,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,688.60 : 118,213.62 = 51,677.74 : x
  2. Step 2: Convert to fraction form
    85,688.60/118,213.62 = 51,677.74/x
  3. Step 3: Cross multiply
    85,688.60x = 118,213.62 × 51,677.74
  4. Step 4: Simplify right side
    85,688.60x = 6,109,012,672.79
  5. Step 5: Solve for x
    x = 6,109,012,672.79/85,688.60
  6. Step 6: Final answer
    x = 71,293.18

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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.