Home / 79,488.90-109,705.05-51,276.60

Finding the Fourth Proportional to 79,488.90, 109,705.05 and 51,276.60

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Solution

The fourth proportional to 79,488.90, 109,705.05 and 51,276.60 is: 70,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,488.90 : 109,705.05 = 51,276.60 : x
  2. Step 2: Convert to fraction form
    79,488.90/109,705.05 = 51,276.60/x
  3. Step 3: Cross multiply
    79,488.90x = 109,705.05 × 51,276.60
  4. Step 4: Simplify right side
    79,488.90x = 5,625,301,966.83
  5. Step 5: Solve for x
    x = 5,625,301,966.83/79,488.90
  6. Step 6: Final answer
    x = 70,768.40

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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.