Home / 77,842.08-107,457.84-50,985.72

Finding the Fourth Proportional to 77,842.08, 107,457.84 and 50,985.72

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Solution

The fourth proportional to 77,842.08, 107,457.84 and 50,985.72 is: 70,383.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,842.08 : 107,457.84 = 50,985.72 : x
  2. Step 2: Convert to fraction form
    77,842.08/107,457.84 = 50,985.72/x
  3. Step 3: Cross multiply
    77,842.08x = 107,457.84 × 50,985.72
  4. Step 4: Simplify right side
    77,842.08x = 5,478,815,342.04
  5. Step 5: Solve for x
    x = 5,478,815,342.04/77,842.08
  6. Step 6: Final answer
    x = 70,383.72

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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.