Home / 78,339.03-108,124.92-48,140.21

Finding the Fourth Proportional to 78,339.03, 108,124.92 and 48,140.21

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Solution

The fourth proportional to 78,339.03, 108,124.92 and 48,140.21 is: 66,443.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,339.03 : 108,124.92 = 48,140.21 : x
  2. Step 2: Convert to fraction form
    78,339.03/108,124.92 = 48,140.21/x
  3. Step 3: Cross multiply
    78,339.03x = 108,124.92 × 48,140.21
  4. Step 4: Simplify right side
    78,339.03x = 5,205,155,814.41
  5. Step 5: Solve for x
    x = 5,205,155,814.41/78,339.03
  6. Step 6: Final answer
    x = 66,443.97

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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.