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Finding the Fourth Proportional to 145,655.57, 218,427.99 and 56,897.54

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Solution

The fourth proportional to 145,655.57, 218,427.99 and 56,897.54 is: 85,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,655.57 : 218,427.99 = 56,897.54 : x
  2. Step 2: Convert to fraction form
    145,655.57/218,427.99 = 56,897.54/x
  3. Step 3: Cross multiply
    145,655.57x = 218,427.99 × 56,897.54
  4. Step 4: Simplify right side
    145,655.57x = 12,428,015,131.79
  5. Step 5: Solve for x
    x = 12,428,015,131.79/145,655.57
  6. Step 6: Final answer
    x = 85,324.68

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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.