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Finding the Fourth Proportional to 42,420.60, 63,660.03 and 14,718.60

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Solution

The fourth proportional to 42,420.60, 63,660.03 and 14,718.60 is: 22,088.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.60 : 63,660.03 = 14,718.60 : x
  2. Step 2: Convert to fraction form
    42,420.60/63,660.03 = 14,718.60/x
  3. Step 3: Cross multiply
    42,420.60x = 63,660.03 × 14,718.60
  4. Step 4: Simplify right side
    42,420.60x = 936,986,517.56
  5. Step 5: Solve for x
    x = 936,986,517.56/42,420.60
  6. Step 6: Final answer
    x = 22,088.01

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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.