Home / 71,842.55-99,145.80-40,011.45

Finding the Fourth Proportional to 71,842.55, 99,145.80 and 40,011.45

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Solution

The fourth proportional to 71,842.55, 99,145.80 and 40,011.45 is: 55,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,842.55 : 99,145.80 = 40,011.45 : x
  2. Step 2: Convert to fraction form
    71,842.55/99,145.80 = 40,011.45/x
  3. Step 3: Cross multiply
    71,842.55x = 99,145.80 × 40,011.45
  4. Step 4: Simplify right side
    71,842.55x = 3,966,967,219.41
  5. Step 5: Solve for x
    x = 3,966,967,219.41/71,842.55
  6. Step 6: Final answer
    x = 55,217.52

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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.