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Finding the Fourth Proportional to 60,368.91, 90,532.86 and 20,916.83

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Solution

The fourth proportional to 60,368.91, 90,532.86 and 20,916.83 is: 31,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,368.91 : 90,532.86 = 20,916.83 : x
  2. Step 2: Convert to fraction form
    60,368.91/90,532.86 = 20,916.83/x
  3. Step 3: Cross multiply
    60,368.91x = 90,532.86 × 20,916.83
  4. Step 4: Simplify right side
    60,368.91x = 1,893,659,989.37
  5. Step 5: Solve for x
    x = 1,893,659,989.37/60,368.91
  6. Step 6: Final answer
    x = 31,368.13

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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.