Home / 85,209.87-117,570.67-48,909.10

Finding the Fourth Proportional to 85,209.87, 117,570.67 and 48,909.10

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Solution

The fourth proportional to 85,209.87, 117,570.67 and 48,909.10 is: 67,483.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.87 : 117,570.67 = 48,909.10 : x
  2. Step 2: Convert to fraction form
    85,209.87/117,570.67 = 48,909.10/x
  3. Step 3: Cross multiply
    85,209.87x = 117,570.67 × 48,909.10
  4. Step 4: Simplify right side
    85,209.87x = 5,750,275,656.10
  5. Step 5: Solve for x
    x = 5,750,275,656.10/85,209.87
  6. Step 6: Final answer
    x = 67,483.68

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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.