Home / 86,005.02-129,022.65-39,262.62

Finding the Fourth Proportional to 86,005.02, 129,022.65 and 39,262.62

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Solution

The fourth proportional to 86,005.02, 129,022.65 and 39,262.62 is: 58,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.02 : 129,022.65 = 39,262.62 : x
  2. Step 2: Convert to fraction form
    86,005.02/129,022.65 = 39,262.62/x
  3. Step 3: Cross multiply
    86,005.02x = 129,022.65 × 39,262.62
  4. Step 4: Simplify right side
    86,005.02x = 5,065,767,278.34
  5. Step 5: Solve for x
    x = 5,065,767,278.34/86,005.02
  6. Step 6: Final answer
    x = 58,900.83

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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.