Home / 78,325.67-108,089.49-42,515.66

Finding the Fourth Proportional to 78,325.67, 108,089.49 and 42,515.66

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Solution

The fourth proportional to 78,325.67, 108,089.49 and 42,515.66 is: 58,671.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,325.67 : 108,089.49 = 42,515.66 : x
  2. Step 2: Convert to fraction form
    78,325.67/108,089.49 = 42,515.66/x
  3. Step 3: Cross multiply
    78,325.67x = 108,089.49 × 42,515.66
  4. Step 4: Simplify right side
    78,325.67x = 4,595,496,006.41
  5. Step 5: Solve for x
    x = 4,595,496,006.41/78,325.67
  6. Step 6: Final answer
    x = 58,671.65

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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.