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Finding the Fourth Proportional to 42,880.80, 64,328.80 and 14,798.64

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Solution

The fourth proportional to 42,880.80, 64,328.80 and 14,798.64 is: 22,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,880.80 : 64,328.80 = 14,798.64 : x
  2. Step 2: Convert to fraction form
    42,880.80/64,328.80 = 14,798.64/x
  3. Step 3: Cross multiply
    42,880.80x = 64,328.80 × 14,798.64
  4. Step 4: Simplify right side
    42,880.80x = 951,978,752.83
  5. Step 5: Solve for x
    x = 951,978,752.83/42,880.80
  6. Step 6: Final answer
    x = 22,200.58

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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.