Home / 86,461.09-129,705.05-36,541.40

Finding the Fourth Proportional to 86,461.09, 129,705.05 and 36,541.40

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Solution

The fourth proportional to 86,461.09, 129,705.05 and 36,541.40 is: 54,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,461.09 : 129,705.05 = 36,541.40 : x
  2. Step 2: Convert to fraction form
    86,461.09/129,705.05 = 36,541.40/x
  3. Step 3: Cross multiply
    86,461.09x = 129,705.05 × 36,541.40
  4. Step 4: Simplify right side
    86,461.09x = 4,739,604,114.07
  5. Step 5: Solve for x
    x = 4,739,604,114.07/86,461.09
  6. Step 6: Final answer
    x = 54,817.77

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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.