Home / 85,753.42-128,561.44-40,752.19

Finding the Fourth Proportional to 85,753.42, 128,561.44 and 40,752.19

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Solution

The fourth proportional to 85,753.42, 128,561.44 and 40,752.19 is: 61,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.42 : 128,561.44 = 40,752.19 : x
  2. Step 2: Convert to fraction form
    85,753.42/128,561.44 = 40,752.19/x
  3. Step 3: Cross multiply
    85,753.42x = 128,561.44 × 40,752.19
  4. Step 4: Simplify right side
    85,753.42x = 5,239,160,127.67
  5. Step 5: Solve for x
    x = 5,239,160,127.67/85,753.42
  6. Step 6: Final answer
    x = 61,095.64

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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.