Home / 78,718.35-118,103.06-47,123.49

Finding the Fourth Proportional to 78,718.35, 118,103.06 and 47,123.49

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Solution

The fourth proportional to 78,718.35, 118,103.06 and 47,123.49 is: 70,700.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718.35 : 118,103.06 = 47,123.49 : x
  2. Step 2: Convert to fraction form
    78,718.35/118,103.06 = 47,123.49/x
  3. Step 3: Cross multiply
    78,718.35x = 118,103.06 × 47,123.49
  4. Step 4: Simplify right side
    78,718.35x = 5,565,428,366.88
  5. Step 5: Solve for x
    x = 5,565,428,366.88/78,718.35
  6. Step 6: Final answer
    x = 70,700.52

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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.