Home / 75,099.20-112,430.10-45,501.80

Finding the Fourth Proportional to 75,099.20, 112,430.10 and 45,501.80

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Solution

The fourth proportional to 75,099.20, 112,430.10 and 45,501.80 is: 68,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,099.20 : 112,430.10 = 45,501.80 : x
  2. Step 2: Convert to fraction form
    75,099.20/112,430.10 = 45,501.80/x
  3. Step 3: Cross multiply
    75,099.20x = 112,430.10 × 45,501.80
  4. Step 4: Simplify right side
    75,099.20x = 5,115,771,924.18
  5. Step 5: Solve for x
    x = 5,115,771,924.18/75,099.20
  6. Step 6: Final answer
    x = 68,120.19

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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.