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Finding the Fourth Proportional to 48,305.80, 72,458.70 and 40,011.40

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Solution

The fourth proportional to 48,305.80, 72,458.70 and 40,011.40 is: 60,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,305.80 : 72,458.70 = 40,011.40 : x
  2. Step 2: Convert to fraction form
    48,305.80/72,458.70 = 40,011.40/x
  3. Step 3: Cross multiply
    48,305.80x = 72,458.70 × 40,011.40
  4. Step 4: Simplify right side
    48,305.80x = 2,899,174,029.18
  5. Step 5: Solve for x
    x = 2,899,174,029.18/48,305.80
  6. Step 6: Final answer
    x = 60,017.10

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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.