Home / 86,476.05-129,707.17-38,459.54

Finding the Fourth Proportional to 86,476.05, 129,707.17 and 38,459.54

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Solution

The fourth proportional to 86,476.05, 129,707.17 and 38,459.54 is: 57,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,476.05 : 129,707.17 = 38,459.54 : x
  2. Step 2: Convert to fraction form
    86,476.05/129,707.17 = 38,459.54/x
  3. Step 3: Cross multiply
    86,476.05x = 129,707.17 × 38,459.54
  4. Step 4: Simplify right side
    86,476.05x = 4,988,478,321.02
  5. Step 5: Solve for x
    x = 4,988,478,321.02/86,476.05
  6. Step 6: Final answer
    x = 57,686.24

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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.