Home / 78,249.68-108,006.72-64,136.24

Finding the Fourth Proportional to 78,249.68, 108,006.72 and 64,136.24

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Solution

The fourth proportional to 78,249.68, 108,006.72 and 64,136.24 is: 88,526.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,249.68 : 108,006.72 = 64,136.24 : x
  2. Step 2: Convert to fraction form
    78,249.68/108,006.72 = 64,136.24/x
  3. Step 3: Cross multiply
    78,249.68x = 108,006.72 × 64,136.24
  4. Step 4: Simplify right side
    78,249.68x = 6,927,144,915.53
  5. Step 5: Solve for x
    x = 6,927,144,915.53/78,249.68
  6. Step 6: Final answer
    x = 88,526.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.