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Finding the Fourth Proportional to 52,478.69, 72,420.75 and 28,604.88

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Solution

The fourth proportional to 52,478.69, 72,420.75 and 28,604.88 is: 39,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,478.69 : 72,420.75 = 28,604.88 : x
  2. Step 2: Convert to fraction form
    52,478.69/72,420.75 = 28,604.88/x
  3. Step 3: Cross multiply
    52,478.69x = 72,420.75 × 28,604.88
  4. Step 4: Simplify right side
    52,478.69x = 2,071,586,863.26
  5. Step 5: Solve for x
    x = 2,071,586,863.26/52,478.69
  6. Step 6: Final answer
    x = 39,474.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.