Home / 57,386.70-79,171.47-42,315.03

Finding the Fourth Proportional to 57,386.70, 79,171.47 and 42,315.03

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Solution

The fourth proportional to 57,386.70, 79,171.47 and 42,315.03 is: 58,378.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,386.70 : 79,171.47 = 42,315.03 : x
  2. Step 2: Convert to fraction form
    57,386.70/79,171.47 = 42,315.03/x
  3. Step 3: Cross multiply
    57,386.70x = 79,171.47 × 42,315.03
  4. Step 4: Simplify right side
    57,386.70x = 3,350,143,128.19
  5. Step 5: Solve for x
    x = 3,350,143,128.19/57,386.70
  6. Step 6: Final answer
    x = 58,378.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.