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Finding the Fourth Proportional to 56,487.53, 77,953.57 and 30,993.45

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Solution

The fourth proportional to 56,487.53, 77,953.57 and 30,993.45 is: 42,771.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,487.53 : 77,953.57 = 30,993.45 : x
  2. Step 2: Convert to fraction form
    56,487.53/77,953.57 = 30,993.45/x
  3. Step 3: Cross multiply
    56,487.53x = 77,953.57 × 30,993.45
  4. Step 4: Simplify right side
    56,487.53x = 2,416,050,317.13
  5. Step 5: Solve for x
    x = 2,416,050,317.13/56,487.53
  6. Step 6: Final answer
    x = 42,771.39

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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.