Home / 78,194.74-107,908.88-42,384.64

Finding the Fourth Proportional to 78,194.74, 107,908.88 and 42,384.64

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Solution

The fourth proportional to 78,194.74, 107,908.88 and 42,384.64 is: 58,490.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,194.74 : 107,908.88 = 42,384.64 : x
  2. Step 2: Convert to fraction form
    78,194.74/107,908.88 = 42,384.64/x
  3. Step 3: Cross multiply
    78,194.74x = 107,908.88 × 42,384.64
  4. Step 4: Simplify right side
    78,194.74x = 4,573,679,031.60
  5. Step 5: Solve for x
    x = 4,573,679,031.60/78,194.74
  6. Step 6: Final answer
    x = 58,490.88

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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.