Home / 85,927.79-128,874.53-28,996.13

Finding the Fourth Proportional to 85,927.79, 128,874.53 and 28,996.13

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Solution

The fourth proportional to 85,927.79, 128,874.53 and 28,996.13 is: 43,488.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,927.79 : 128,874.53 = 28,996.13 : x
  2. Step 2: Convert to fraction form
    85,927.79/128,874.53 = 28,996.13/x
  3. Step 3: Cross multiply
    85,927.79x = 128,874.53 × 28,996.13
  4. Step 4: Simplify right side
    85,927.79x = 3,736,861,836.22
  5. Step 5: Solve for x
    x = 3,736,861,836.22/85,927.79
  6. Step 6: Final answer
    x = 43,488.40

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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.