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Finding the Fourth Proportional to 72,453.70, 108,712.95 and 34,999.30

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Solution

The fourth proportional to 72,453.70, 108,712.95 and 34,999.30 is: 52,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,453.70 : 108,712.95 = 34,999.30 : x
  2. Step 2: Convert to fraction form
    72,453.70/108,712.95 = 34,999.30/x
  3. Step 3: Cross multiply
    72,453.70x = 108,712.95 × 34,999.30
  4. Step 4: Simplify right side
    72,453.70x = 3,804,877,150.94
  5. Step 5: Solve for x
    x = 3,804,877,150.94/72,453.70
  6. Step 6: Final answer
    x = 52,514.60

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1.5x scale

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.