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Finding the Fourth Proportional to 72,266.10, 108,398.55 and 56,484.40

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Solution

The fourth proportional to 72,266.10, 108,398.55 and 56,484.40 is: 84,726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,266.10 : 108,398.55 = 56,484.40 : x
  2. Step 2: Convert to fraction form
    72,266.10/108,398.55 = 56,484.40/x
  3. Step 3: Cross multiply
    72,266.10x = 108,398.55 × 56,484.40
  4. Step 4: Simplify right side
    72,266.10x = 6,122,826,786.62
  5. Step 5: Solve for x
    x = 6,122,826,786.62/72,266.10
  6. Step 6: Final answer
    x = 84,726.13

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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.