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Finding the Fourth Proportional to 56,345, 84,485.90 and 38,595.70

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Solution

The fourth proportional to 56,345, 84,485.90 and 38,595.70 is: 57,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,345 : 84,485.90 = 38,595.70 : x
  2. Step 2: Convert to fraction form
    56,345/84,485.90 = 38,595.70/x
  3. Step 3: Cross multiply
    56,345x = 84,485.90 × 38,595.70
  4. Step 4: Simplify right side
    56,345x = 3,260,792,450.63
  5. Step 5: Solve for x
    x = 3,260,792,450.63/56,345
  6. Step 6: Final answer
    x = 57,871.90

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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.