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Finding the Fourth Proportional to 60,369.90, 90,534.33 and 20,917.80

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Solution

The fourth proportional to 60,369.90, 90,534.33 and 20,917.80 is: 31,369.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,369.90 : 90,534.33 = 20,917.80 : x
  2. Step 2: Convert to fraction form
    60,369.90/90,534.33 = 20,917.80/x
  3. Step 3: Cross multiply
    60,369.90x = 90,534.33 × 20,917.80
  4. Step 4: Simplify right side
    60,369.90x = 1,893,779,008.07
  5. Step 5: Solve for x
    x = 1,893,779,008.07/60,369.90
  6. Step 6: Final answer
    x = 31,369.59

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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.