Home / 77,820.30-107,387.61-45,992.16

Finding the Fourth Proportional to 77,820.30, 107,387.61 and 45,992.16

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Solution

The fourth proportional to 77,820.30, 107,387.61 and 45,992.16 is: 63,466.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.30 : 107,387.61 = 45,992.16 : x
  2. Step 2: Convert to fraction form
    77,820.30/107,387.61 = 45,992.16/x
  3. Step 3: Cross multiply
    77,820.30x = 107,387.61 × 45,992.16
  4. Step 4: Simplify right side
    77,820.30x = 4,938,988,141.14
  5. Step 5: Solve for x
    x = 4,938,988,141.14/77,820.30
  6. Step 6: Final answer
    x = 63,466.58

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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.