Home / 86,387.34-129,578.58-47,192.67

Finding the Fourth Proportional to 86,387.34, 129,578.58 and 47,192.67

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Solution

The fourth proportional to 86,387.34, 129,578.58 and 47,192.67 is: 70,787.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,387.34 : 129,578.58 = 47,192.67 : x
  2. Step 2: Convert to fraction form
    86,387.34/129,578.58 = 47,192.67/x
  3. Step 3: Cross multiply
    86,387.34x = 129,578.58 × 47,192.67
  4. Step 4: Simplify right side
    86,387.34x = 6,115,159,165.01
  5. Step 5: Solve for x
    x = 6,115,159,165.01/86,387.34
  6. Step 6: Final answer
    x = 70,787.68

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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.