Home / 85,423.77-128,062.74-60,385.05

Finding the Fourth Proportional to 85,423.77, 128,062.74 and 60,385.05

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Solution

The fourth proportional to 85,423.77, 128,062.74 and 60,385.05 is: 90,526.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,423.77 : 128,062.74 = 60,385.05 : x
  2. Step 2: Convert to fraction form
    85,423.77/128,062.74 = 60,385.05/x
  3. Step 3: Cross multiply
    85,423.77x = 128,062.74 × 60,385.05
  4. Step 4: Simplify right side
    85,423.77x = 7,733,074,958.04
  5. Step 5: Solve for x
    x = 7,733,074,958.04/85,423.77
  6. Step 6: Final answer
    x = 90,526.03

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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.