Home / 85,463.16-128,147.76-26,282.40

Finding the Fourth Proportional to 85,463.16, 128,147.76 and 26,282.40

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Solution

The fourth proportional to 85,463.16, 128,147.76 and 26,282.40 is: 39,409.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,463.16 : 128,147.76 = 26,282.40 : x
  2. Step 2: Convert to fraction form
    85,463.16/128,147.76 = 26,282.40/x
  3. Step 3: Cross multiply
    85,463.16x = 128,147.76 × 26,282.40
  4. Step 4: Simplify right side
    85,463.16x = 3,368,030,687.42
  5. Step 5: Solve for x
    x = 3,368,030,687.42/85,463.16
  6. Step 6: Final answer
    x = 39,409.15

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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.