Home / 72,475.48-100,015.97-40,645.06

Finding the Fourth Proportional to 72,475.48, 100,015.97 and 40,645.06

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Solution

The fourth proportional to 72,475.48, 100,015.97 and 40,645.06 is: 56,090.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.48 : 100,015.97 = 40,645.06 : x
  2. Step 2: Convert to fraction form
    72,475.48/100,015.97 = 40,645.06/x
  3. Step 3: Cross multiply
    72,475.48x = 100,015.97 × 40,645.06
  4. Step 4: Simplify right side
    72,475.48x = 4,065,154,648.34
  5. Step 5: Solve for x
    x = 4,065,154,648.34/72,475.48
  6. Step 6: Final answer
    x = 56,090.07

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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.