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Finding the Fourth Proportional to 60,136.41, 90,205 and 15,762.78

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Solution

The fourth proportional to 60,136.41, 90,205 and 15,762.78 is: 23,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,136.41 : 90,205 = 15,762.78 : x
  2. Step 2: Convert to fraction form
    60,136.41/90,205 = 15,762.78/x
  3. Step 3: Cross multiply
    60,136.41x = 90,205 × 15,762.78
  4. Step 4: Simplify right side
    60,136.41x = 1,421,881,569.90
  5. Step 5: Solve for x
    x = 1,421,881,569.90/60,136.41
  6. Step 6: Final answer
    x = 23,644.27

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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.