Home / 42,955.20-64,401.62-28,880.28

Finding the Fourth Proportional to 42,955.20, 64,401.62 and 28,880.28

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Solution

The fourth proportional to 42,955.20, 64,401.62 and 28,880.28 is: 43,299.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,955.20 : 64,401.62 = 28,880.28 : x
  2. Step 2: Convert to fraction form
    42,955.20/64,401.62 = 28,880.28/x
  3. Step 3: Cross multiply
    42,955.20x = 64,401.62 × 28,880.28
  4. Step 4: Simplify right side
    42,955.20x = 1,859,936,673.65
  5. Step 5: Solve for x
    x = 1,859,936,673.65/42,955.20
  6. Step 6: Final answer
    x = 43,299.45

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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.