Home / 57,152.18-78,869.30-31,658.45

Finding the Fourth Proportional to 57,152.18, 78,869.30 and 31,658.45

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Solution

The fourth proportional to 57,152.18, 78,869.30 and 31,658.45 is: 43,688.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,152.18 : 78,869.30 = 31,658.45 : x
  2. Step 2: Convert to fraction form
    57,152.18/78,869.30 = 31,658.45/x
  3. Step 3: Cross multiply
    57,152.18x = 78,869.30 × 31,658.45
  4. Step 4: Simplify right side
    57,152.18x = 2,496,879,237.95
  5. Step 5: Solve for x
    x = 2,496,879,237.95/57,152.18
  6. Step 6: Final answer
    x = 43,688.26

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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.