Home / 42,744.80-64,117.20-40,703.60

Finding the Fourth Proportional to 42,744.80, 64,117.20 and 40,703.60

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Solution

The fourth proportional to 42,744.80, 64,117.20 and 40,703.60 is: 61,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,744.80 : 64,117.20 = 40,703.60 : x
  2. Step 2: Convert to fraction form
    42,744.80/64,117.20 = 40,703.60/x
  3. Step 3: Cross multiply
    42,744.80x = 64,117.20 × 40,703.60
  4. Step 4: Simplify right side
    42,744.80x = 2,609,800,861.92
  5. Step 5: Solve for x
    x = 2,609,800,861.92/42,744.80
  6. Step 6: Final answer
    x = 61,055.40

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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.