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Finding the Fourth Proportional to 75,240.80, 112,861.20 and 70,575.20

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Solution

The fourth proportional to 75,240.80, 112,861.20 and 70,575.20 is: 105,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,240.80 : 112,861.20 = 70,575.20 : x
  2. Step 2: Convert to fraction form
    75,240.80/112,861.20 = 70,575.20/x
  3. Step 3: Cross multiply
    75,240.80x = 112,861.20 × 70,575.20
  4. Step 4: Simplify right side
    75,240.80x = 7,965,201,762.24
  5. Step 5: Solve for x
    x = 7,965,201,762.24/75,240.80
  6. Step 6: Final answer
    x = 105,862.80

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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.