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Finding the Fourth Proportional to 45,703.80, 68,555.70 and 38,486.70

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Solution

The fourth proportional to 45,703.80, 68,555.70 and 38,486.70 is: 57,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,703.80 : 68,555.70 = 38,486.70 : x
  2. Step 2: Convert to fraction form
    45,703.80/68,555.70 = 38,486.70/x
  3. Step 3: Cross multiply
    45,703.80x = 68,555.70 × 38,486.70
  4. Step 4: Simplify right side
    45,703.80x = 2,638,482,659.19
  5. Step 5: Solve for x
    x = 2,638,482,659.19/45,703.80
  6. Step 6: Final answer
    x = 57,730.05

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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.