Home / 78,121.41-107,807.20-43,666.09

Finding the Fourth Proportional to 78,121.41, 107,807.20 and 43,666.09

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Solution

The fourth proportional to 78,121.41, 107,807.20 and 43,666.09 is: 60,259.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,121.41 : 107,807.20 = 43,666.09 : x
  2. Step 2: Convert to fraction form
    78,121.41/107,807.20 = 43,666.09/x
  3. Step 3: Cross multiply
    78,121.41x = 107,807.20 × 43,666.09
  4. Step 4: Simplify right side
    78,121.41x = 4,707,518,897.85
  5. Step 5: Solve for x
    x = 4,707,518,897.85/78,121.41
  6. Step 6: Final answer
    x = 60,259.01

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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.