Home / 76,186.40-105,136.08-42,653.60

Finding the Fourth Proportional to 76,186.40, 105,136.08 and 42,653.60

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Solution

The fourth proportional to 76,186.40, 105,136.08 and 42,653.60 is: 58,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,186.40 : 105,136.08 = 42,653.60 : x
  2. Step 2: Convert to fraction form
    76,186.40/105,136.08 = 42,653.60/x
  3. Step 3: Cross multiply
    76,186.40x = 105,136.08 × 42,653.60
  4. Step 4: Simplify right side
    76,186.40x = 4,484,432,301.89
  5. Step 5: Solve for x
    x = 4,484,432,301.89/76,186.40
  6. Step 6: Final answer
    x = 58,861.32

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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.