Home / 85,518.20-128,277.30-38,862.20

Finding the Fourth Proportional to 85,518.20, 128,277.30 and 38,862.20

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Solution

The fourth proportional to 85,518.20, 128,277.30 and 38,862.20 is: 58,293.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.20 : 128,277.30 = 38,862.20 : x
  2. Step 2: Convert to fraction form
    85,518.20/128,277.30 = 38,862.20/x
  3. Step 3: Cross multiply
    85,518.20x = 128,277.30 × 38,862.20
  4. Step 4: Simplify right side
    85,518.20x = 4,985,138,088.06
  5. Step 5: Solve for x
    x = 4,985,138,088.06/85,518.20
  6. Step 6: Final answer
    x = 58,293.30

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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.