Home / 86,258.63-129,404.28-30,114.77

Finding the Fourth Proportional to 86,258.63, 129,404.28 and 30,114.77

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Solution

The fourth proportional to 86,258.63, 129,404.28 and 30,114.77 is: 45,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,258.63 : 129,404.28 = 30,114.77 : x
  2. Step 2: Convert to fraction form
    86,258.63/129,404.28 = 30,114.77/x
  3. Step 3: Cross multiply
    86,258.63x = 129,404.28 × 30,114.77
  4. Step 4: Simplify right side
    86,258.63x = 3,896,979,482.19
  5. Step 5: Solve for x
    x = 3,896,979,482.19/86,258.63
  6. Step 6: Final answer
    x = 45,177.85

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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.