Home / 85,787.86-118,239.39-57,056.14

Finding the Fourth Proportional to 85,787.86, 118,239.39 and 57,056.14

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Solution

The fourth proportional to 85,787.86, 118,239.39 and 57,056.14 is: 78,639.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.86 : 118,239.39 = 57,056.14 : x
  2. Step 2: Convert to fraction form
    85,787.86/118,239.39 = 57,056.14/x
  3. Step 3: Cross multiply
    85,787.86x = 118,239.39 × 57,056.14
  4. Step 4: Simplify right side
    85,787.86x = 6,746,283,189.35
  5. Step 5: Solve for x
    x = 6,746,283,189.35/85,787.86
  6. Step 6: Final answer
    x = 78,639.14

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1.5x scale

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.