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Finding the Fourth Proportional to 48,436.80, 72,655.20 and 42,604.80

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Solution

The fourth proportional to 48,436.80, 72,655.20 and 42,604.80 is: 63,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,436.80 : 72,655.20 = 42,604.80 : x
  2. Step 2: Convert to fraction form
    48,436.80/72,655.20 = 42,604.80/x
  3. Step 3: Cross multiply
    48,436.80x = 72,655.20 × 42,604.80
  4. Step 4: Simplify right side
    48,436.80x = 3,095,460,264.96
  5. Step 5: Solve for x
    x = 3,095,460,264.96/48,436.80
  6. Step 6: Final answer
    x = 63,907.20

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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.