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Finding the Fourth Proportional to 52,478.60, 72,420.60 and 28,604.96

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Solution

The fourth proportional to 52,478.60, 72,420.60 and 28,604.96 is: 39,474.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,478.60 : 72,420.60 = 28,604.96 : x
  2. Step 2: Convert to fraction form
    52,478.60/72,420.60 = 28,604.96/x
  3. Step 3: Cross multiply
    52,478.60x = 72,420.60 × 28,604.96
  4. Step 4: Simplify right side
    52,478.60x = 2,071,588,366.18
  5. Step 5: Solve for x
    x = 2,071,588,366.18/52,478.60
  6. Step 6: Final answer
    x = 39,474.92

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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.