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Finding the Fourth Proportional to 56,484.57, 77,949.46 and 30,990.47

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Solution

The fourth proportional to 56,484.57, 77,949.46 and 30,990.47 is: 42,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,484.57 : 77,949.46 = 30,990.47 : x
  2. Step 2: Convert to fraction form
    56,484.57/77,949.46 = 30,990.47/x
  3. Step 3: Cross multiply
    56,484.57x = 77,949.46 × 30,990.47
  4. Step 4: Simplify right side
    56,484.57x = 2,415,690,795.50
  5. Step 5: Solve for x
    x = 2,415,690,795.50/56,484.57
  6. Step 6: Final answer
    x = 42,767.27

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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.