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Finding the Fourth Proportional to 69,580.50, 96,021.12 and 39,772.50

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Solution

The fourth proportional to 69,580.50, 96,021.12 and 39,772.50 is: 54,886.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,580.50 : 96,021.12 = 39,772.50 : x
  2. Step 2: Convert to fraction form
    69,580.50/96,021.12 = 39,772.50/x
  3. Step 3: Cross multiply
    69,580.50x = 96,021.12 × 39,772.50
  4. Step 4: Simplify right side
    69,580.50x = 3,818,999,995.20
  5. Step 5: Solve for x
    x = 3,818,999,995.20/69,580.50
  6. Step 6: Final answer
    x = 54,886.07

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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.