Home / 85,574.28-128,394.30-35,641.02

Finding the Fourth Proportional to 85,574.28, 128,394.30 and 35,641.02

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Solution

The fourth proportional to 85,574.28, 128,394.30 and 35,641.02 is: 53,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,574.28 : 128,394.30 = 35,641.02 : x
  2. Step 2: Convert to fraction form
    85,574.28/128,394.30 = 35,641.02/x
  3. Step 3: Cross multiply
    85,574.28x = 128,394.30 × 35,641.02
  4. Step 4: Simplify right side
    85,574.28x = 4,576,103,814.19
  5. Step 5: Solve for x
    x = 4,576,103,814.19/85,574.28
  6. Step 6: Final answer
    x = 53,475.22

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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.