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Finding the Fourth Proportional to 56,656.80, 84,985.20 and 47,799.45

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Solution

The fourth proportional to 56,656.80, 84,985.20 and 47,799.45 is: 71,699.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,656.80 : 84,985.20 = 47,799.45 : x
  2. Step 2: Convert to fraction form
    56,656.80/84,985.20 = 47,799.45/x
  3. Step 3: Cross multiply
    56,656.80x = 84,985.20 × 47,799.45
  4. Step 4: Simplify right side
    56,656.80x = 4,062,245,818.14
  5. Step 5: Solve for x
    x = 4,062,245,818.14/56,656.80
  6. Step 6: Final answer
    x = 71,699.18

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Similar ratio
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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.