Home / 78,079.02-107,709.21-47,443.83

Finding the Fourth Proportional to 78,079.02, 107,709.21 and 47,443.83

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Solution

The fourth proportional to 78,079.02, 107,709.21 and 47,443.83 is: 65,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,079.02 : 107,709.21 = 47,443.83 : x
  2. Step 2: Convert to fraction form
    78,079.02/107,709.21 = 47,443.83/x
  3. Step 3: Cross multiply
    78,079.02x = 107,709.21 × 47,443.83
  4. Step 4: Simplify right side
    78,079.02x = 5,110,137,448.67
  5. Step 5: Solve for x
    x = 5,110,137,448.67/78,079.02
  6. Step 6: Final answer
    x = 65,448.28

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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.