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Finding the Fourth Proportional to 56,285.73, 77,631.03 and 39,284.55

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Solution

The fourth proportional to 56,285.73, 77,631.03 and 39,284.55 is: 54,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,285.73 : 77,631.03 = 39,284.55 : x
  2. Step 2: Convert to fraction form
    56,285.73/77,631.03 = 39,284.55/x
  3. Step 3: Cross multiply
    56,285.73x = 77,631.03 × 39,284.55
  4. Step 4: Simplify right side
    56,285.73x = 3,049,700,079.59
  5. Step 5: Solve for x
    x = 3,049,700,079.59/56,285.73
  6. Step 6: Final answer
    x = 54,182.47

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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.