Home / 57,012.60-78,681.24-33,139.20

Finding the Fourth Proportional to 57,012.60, 78,681.24 and 33,139.20

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Solution

The fourth proportional to 57,012.60, 78,681.24 and 33,139.20 is: 45,734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,012.60 : 78,681.24 = 33,139.20 : x
  2. Step 2: Convert to fraction form
    57,012.60/78,681.24 = 33,139.20/x
  3. Step 3: Cross multiply
    57,012.60x = 78,681.24 × 33,139.20
  4. Step 4: Simplify right side
    57,012.60x = 2,607,433,348.61
  5. Step 5: Solve for x
    x = 2,607,433,348.61/57,012.60
  6. Step 6: Final answer
    x = 45,734.34

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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.