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Finding the Fourth Proportional to 55,450.80, 83,030.40 and 40,579.20

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Solution

The fourth proportional to 55,450.80, 83,030.40 and 40,579.20 is: 60,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,450.80 : 83,030.40 = 40,579.20 : x
  2. Step 2: Convert to fraction form
    55,450.80/83,030.40 = 40,579.20/x
  3. Step 3: Cross multiply
    55,450.80x = 83,030.40 × 40,579.20
  4. Step 4: Simplify right side
    55,450.80x = 3,369,307,207.68
  5. Step 5: Solve for x
    x = 3,369,307,207.68/55,450.80
  6. Step 6: Final answer
    x = 60,762.10

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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.