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Finding the Fourth Proportional to 56,821.48, 85,270.14 and 19,885.48

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Solution

The fourth proportional to 56,821.48, 85,270.14 and 19,885.48 is: 29,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,821.48 : 85,270.14 = 19,885.48 : x
  2. Step 2: Convert to fraction form
    56,821.48/85,270.14 = 19,885.48/x
  3. Step 3: Cross multiply
    56,821.48x = 85,270.14 × 19,885.48
  4. Step 4: Simplify right side
    56,821.48x = 1,695,637,663.57
  5. Step 5: Solve for x
    x = 1,695,637,663.57/56,821.48
  6. Step 6: Final answer
    x = 29,841.49

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1.5x scale

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.