Home / 84,436.72-126,800.12-74,970.35

Finding the Fourth Proportional to 84,436.72, 126,800.12 and 74,970.35

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Solution

The fourth proportional to 84,436.72, 126,800.12 and 74,970.35 is: 112,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,436.72 : 126,800.12 = 74,970.35 : x
  2. Step 2: Convert to fraction form
    84,436.72/126,800.12 = 74,970.35/x
  3. Step 3: Cross multiply
    84,436.72x = 126,800.12 × 74,970.35
  4. Step 4: Simplify right side
    84,436.72x = 9,506,249,001.59
  5. Step 5: Solve for x
    x = 9,506,249,001.59/84,436.72
  6. Step 6: Final answer
    x = 112,584.31

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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.