Home / 57,089.56-78,783.68-31,939.08

Finding the Fourth Proportional to 57,089.56, 78,783.68 and 31,939.08

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Solution

The fourth proportional to 57,089.56, 78,783.68 and 31,939.08 is: 44,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,089.56 : 78,783.68 = 31,939.08 : x
  2. Step 2: Convert to fraction form
    57,089.56/78,783.68 = 31,939.08/x
  3. Step 3: Cross multiply
    57,089.56x = 78,783.68 × 31,939.08
  4. Step 4: Simplify right side
    57,089.56x = 2,516,278,258.21
  5. Step 5: Solve for x
    x = 2,516,278,258.21/57,089.56
  6. Step 6: Final answer
    x = 44,075.98

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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.