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Finding the Fourth Proportional to 66,545.40, 91,848.06 and 38,267.40

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Solution

The fourth proportional to 66,545.40, 91,848.06 and 38,267.40 is: 52,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,545.40 : 91,848.06 = 38,267.40 : x
  2. Step 2: Convert to fraction form
    66,545.40/91,848.06 = 38,267.40/x
  3. Step 3: Cross multiply
    66,545.40x = 91,848.06 × 38,267.40
  4. Step 4: Simplify right side
    66,545.40x = 3,514,786,451.24
  5. Step 5: Solve for x
    x = 3,514,786,451.24/66,545.40
  6. Step 6: Final answer
    x = 52,817.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.