Home / 78,717.35-118,101.56-47,122.49

Finding the Fourth Proportional to 78,717.35, 118,101.56 and 47,122.49

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Solution

The fourth proportional to 78,717.35, 118,101.56 and 47,122.49 is: 70,699.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,717.35 : 118,101.56 = 47,122.49 : x
  2. Step 2: Convert to fraction form
    78,717.35/118,101.56 = 47,122.49/x
  3. Step 3: Cross multiply
    78,717.35x = 118,101.56 × 47,122.49
  4. Step 4: Simplify right side
    78,717.35x = 5,565,239,639.73
  5. Step 5: Solve for x
    x = 5,565,239,639.73/78,717.35
  6. Step 6: Final answer
    x = 70,699.02

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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.