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Finding the Fourth Proportional to 60,632.30, 90,948.67 and 20,655.30

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Solution

The fourth proportional to 60,632.30, 90,948.67 and 20,655.30 is: 30,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,632.30 : 90,948.67 = 20,655.30 : x
  2. Step 2: Convert to fraction form
    60,632.30/90,948.67 = 20,655.30/x
  3. Step 3: Cross multiply
    60,632.30x = 90,948.67 × 20,655.30
  4. Step 4: Simplify right side
    60,632.30x = 1,878,572,469.06
  5. Step 5: Solve for x
    x = 1,878,572,469.06/60,632.30
  6. Step 6: Final answer
    x = 30,983.03

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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.