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Finding the Fourth Proportional to 103,090.60, 154,545.90 and 39,953.80

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Solution

The fourth proportional to 103,090.60, 154,545.90 and 39,953.80 is: 59,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,090.60 : 154,545.90 = 39,953.80 : x
  2. Step 2: Convert to fraction form
    103,090.60/154,545.90 = 39,953.80/x
  3. Step 3: Cross multiply
    103,090.60x = 154,545.90 × 39,953.80
  4. Step 4: Simplify right side
    103,090.60x = 6,174,695,979.42
  5. Step 5: Solve for x
    x = 6,174,695,979.42/103,090.60
  6. Step 6: Final answer
    x = 59,895.82

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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.