Home / 86,417.20-119,310.78-70,539.40

Finding the Fourth Proportional to 86,417.20, 119,310.78 and 70,539.40

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Solution

The fourth proportional to 86,417.20, 119,310.78 and 70,539.40 is: 97,389.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,417.20 : 119,310.78 = 70,539.40 : x
  2. Step 2: Convert to fraction form
    86,417.20/119,310.78 = 70,539.40/x
  3. Step 3: Cross multiply
    86,417.20x = 119,310.78 × 70,539.40
  4. Step 4: Simplify right side
    86,417.20x = 8,416,110,834.73
  5. Step 5: Solve for x
    x = 8,416,110,834.73/86,417.20
  6. Step 6: Final answer
    x = 97,389.30

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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.