Home / 77,985.91-117,044.47-73,065.16

Finding the Fourth Proportional to 77,985.91, 117,044.47 and 73,065.16

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Solution

The fourth proportional to 77,985.91, 117,044.47 and 73,065.16 is: 109,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985.91 : 117,044.47 = 73,065.16 : x
  2. Step 2: Convert to fraction form
    77,985.91/117,044.47 = 73,065.16/x
  3. Step 3: Cross multiply
    77,985.91x = 117,044.47 × 73,065.16
  4. Step 4: Simplify right side
    77,985.91x = 8,551,872,342.44
  5. Step 5: Solve for x
    x = 8,551,872,342.44/77,985.91
  6. Step 6: Final answer
    x = 109,659.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.