Home / 89,109.20-122,970.67-53,307.62

Finding the Fourth Proportional to 89,109.20, 122,970.67 and 53,307.62

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Solution

The fourth proportional to 89,109.20, 122,970.67 and 53,307.62 is: 73,564.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,109.20 : 122,970.67 = 53,307.62 : x
  2. Step 2: Convert to fraction form
    89,109.20/122,970.67 = 53,307.62/x
  3. Step 3: Cross multiply
    89,109.20x = 122,970.67 × 53,307.62
  4. Step 4: Simplify right side
    89,109.20x = 6,555,273,747.51
  5. Step 5: Solve for x
    x = 6,555,273,747.51/89,109.20
  6. Step 6: Final answer
    x = 73,564.50

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1.5x scale

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.