Home / 78,316.05-108,076.21-42,506.06

Finding the Fourth Proportional to 78,316.05, 108,076.21 and 42,506.06

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Solution

The fourth proportional to 78,316.05, 108,076.21 and 42,506.06 is: 58,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,316.05 : 108,076.21 = 42,506.06 : x
  2. Step 2: Convert to fraction form
    78,316.05/108,076.21 = 42,506.06/x
  3. Step 3: Cross multiply
    78,316.05x = 108,076.21 × 42,506.06
  4. Step 4: Simplify right side
    78,316.05x = 4,593,893,326.45
  5. Step 5: Solve for x
    x = 4,593,893,326.45/78,316.05
  6. Step 6: Final answer
    x = 58,658.39

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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.