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Finding the Fourth Proportional to 86,580.30, 129,870.45 and 27,434.10

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Solution

The fourth proportional to 86,580.30, 129,870.45 and 27,434.10 is: 41,151.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,580.30 : 129,870.45 = 27,434.10 : x
  2. Step 2: Convert to fraction form
    86,580.30/129,870.45 = 27,434.10/x
  3. Step 3: Cross multiply
    86,580.30x = 129,870.45 × 27,434.10
  4. Step 4: Simplify right side
    86,580.30x = 3,562,878,912.35
  5. Step 5: Solve for x
    x = 3,562,878,912.35/86,580.30
  6. Step 6: Final answer
    x = 41,151.15

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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.