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Finding the Fourth Proportional to 101,649.34, 140,276.10 and 56,937.34

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Solution

The fourth proportional to 101,649.34, 140,276.10 and 56,937.34 is: 78,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,649.34 : 140,276.10 = 56,937.34 : x
  2. Step 2: Convert to fraction form
    101,649.34/140,276.10 = 56,937.34/x
  3. Step 3: Cross multiply
    101,649.34x = 140,276.10 × 56,937.34
  4. Step 4: Simplify right side
    101,649.34x = 7,986,947,999.57
  5. Step 5: Solve for x
    x = 7,986,947,999.57/101,649.34
  6. Step 6: Final answer
    x = 78,573.54

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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.