Home / 57,038.78-78,687.35-36,902.21

Finding the Fourth Proportional to 57,038.78, 78,687.35 and 36,902.21

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Solution

The fourth proportional to 57,038.78, 78,687.35 and 36,902.21 is: 50,908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.78 : 78,687.35 = 36,902.21 : x
  2. Step 2: Convert to fraction form
    57,038.78/78,687.35 = 36,902.21/x
  3. Step 3: Cross multiply
    57,038.78x = 78,687.35 × 36,902.21
  4. Step 4: Simplify right side
    57,038.78x = 2,903,736,895.79
  5. Step 5: Solve for x
    x = 2,903,736,895.79/57,038.78
  6. Step 6: Final answer
    x = 50,908.11

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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.