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Finding the Fourth Proportional to 62,421.80, 93,632.70 and 20,863.40

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Solution

The fourth proportional to 62,421.80, 93,632.70 and 20,863.40 is: 31,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,421.80 : 93,632.70 = 20,863.40 : x
  2. Step 2: Convert to fraction form
    62,421.80/93,632.70 = 20,863.40/x
  3. Step 3: Cross multiply
    62,421.80x = 93,632.70 × 20,863.40
  4. Step 4: Simplify right side
    62,421.80x = 1,953,496,473.18
  5. Step 5: Solve for x
    x = 1,953,496,473.18/62,421.80
  6. Step 6: Final answer
    x = 31,295.10

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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.