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Finding the Fourth Proportional to 56,545.80, 84,764.70 and 20,997.60

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Solution

The fourth proportional to 56,545.80, 84,764.70 and 20,997.60 is: 31,476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,545.80 : 84,764.70 = 20,997.60 : x
  2. Step 2: Convert to fraction form
    56,545.80/84,764.70 = 20,997.60/x
  3. Step 3: Cross multiply
    56,545.80x = 84,764.70 × 20,997.60
  4. Step 4: Simplify right side
    56,545.80x = 1,779,855,264.72
  5. Step 5: Solve for x
    x = 1,779,855,264.72/56,545.80
  6. Step 6: Final answer
    x = 31,476.35

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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.