Home / 78,033.08-107,685.63-42,223.11

Finding the Fourth Proportional to 78,033.08, 107,685.63 and 42,223.11

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Solution

The fourth proportional to 78,033.08, 107,685.63 and 42,223.11 is: 58,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,033.08 : 107,685.63 = 42,223.11 : x
  2. Step 2: Convert to fraction form
    78,033.08/107,685.63 = 42,223.11/x
  3. Step 3: Cross multiply
    78,033.08x = 107,685.63 × 42,223.11
  4. Step 4: Simplify right side
    78,033.08x = 4,546,822,200.91
  5. Step 5: Solve for x
    x = 4,546,822,200.91/78,033.08
  6. Step 6: Final answer
    x = 58,267.88

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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.