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Finding the Fourth Proportional to 56,486.80, 84,730.20 and 43,802.20

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Solution

The fourth proportional to 56,486.80, 84,730.20 and 43,802.20 is: 65,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486.80 : 84,730.20 = 43,802.20 : x
  2. Step 2: Convert to fraction form
    56,486.80/84,730.20 = 43,802.20/x
  3. Step 3: Cross multiply
    56,486.80x = 84,730.20 × 43,802.20
  4. Step 4: Simplify right side
    56,486.80x = 3,711,369,166.44
  5. Step 5: Solve for x
    x = 3,711,369,166.44/56,486.80
  6. Step 6: Final answer
    x = 65,703.30

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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.