Home / 82,421.79-123,600.34-29,102.40

Finding the Fourth Proportional to 82,421.79, 123,600.34 and 29,102.40

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Solution

The fourth proportional to 82,421.79, 123,600.34 and 29,102.40 is: 43,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,421.79 : 123,600.34 = 29,102.40 : x
  2. Step 2: Convert to fraction form
    82,421.79/123,600.34 = 29,102.40/x
  3. Step 3: Cross multiply
    82,421.79x = 123,600.34 × 29,102.40
  4. Step 4: Simplify right side
    82,421.79x = 3,597,066,534.82
  5. Step 5: Solve for x
    x = 3,597,066,534.82/82,421.79
  6. Step 6: Final answer
    x = 43,642.18

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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.