Home / 72,170.64-99,595.20-40,339.53

Finding the Fourth Proportional to 72,170.64, 99,595.20 and 40,339.53

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Solution

The fourth proportional to 72,170.64, 99,595.20 and 40,339.53 is: 55,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,170.64 : 99,595.20 = 40,339.53 : x
  2. Step 2: Convert to fraction form
    72,170.64/99,595.20 = 40,339.53/x
  3. Step 3: Cross multiply
    72,170.64x = 99,595.20 × 40,339.53
  4. Step 4: Simplify right side
    72,170.64x = 4,017,623,558.26
  5. Step 5: Solve for x
    x = 4,017,623,558.26/72,170.64
  6. Step 6: Final answer
    x = 55,668.39

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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.