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Finding the Fourth Proportional to 60,903.79, 91,371.45 and 18,782.94

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Solution

The fourth proportional to 60,903.79, 91,371.45 and 18,782.94 is: 28,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,903.79 : 91,371.45 = 18,782.94 : x
  2. Step 2: Convert to fraction form
    60,903.79/91,371.45 = 18,782.94/x
  3. Step 3: Cross multiply
    60,903.79x = 91,371.45 × 18,782.94
  4. Step 4: Simplify right side
    60,903.79x = 1,716,224,805.71
  5. Step 5: Solve for x
    x = 1,716,224,805.71/60,903.79
  6. Step 6: Final answer
    x = 28,179.28

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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.