Home / 43,649.20-65,473.80-31,985.20

Finding the Fourth Proportional to 43,649.20, 65,473.80 and 31,985.20

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Solution

The fourth proportional to 43,649.20, 65,473.80 and 31,985.20 is: 47,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,649.20 : 65,473.80 = 31,985.20 : x
  2. Step 2: Convert to fraction form
    43,649.20/65,473.80 = 31,985.20/x
  3. Step 3: Cross multiply
    43,649.20x = 65,473.80 × 31,985.20
  4. Step 4: Simplify right side
    43,649.20x = 2,094,192,587.76
  5. Step 5: Solve for x
    x = 2,094,192,587.76/43,649.20
  6. Step 6: Final answer
    x = 47,977.80

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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.