Home / 57,030.92-78,702.52-31,189.48

Finding the Fourth Proportional to 57,030.92, 78,702.52 and 31,189.48

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Solution

The fourth proportional to 57,030.92, 78,702.52 and 31,189.48 is: 43,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,030.92 : 78,702.52 = 31,189.48 : x
  2. Step 2: Convert to fraction form
    57,030.92/78,702.52 = 31,189.48/x
  3. Step 3: Cross multiply
    57,030.92x = 78,702.52 × 31,189.48
  4. Step 4: Simplify right side
    57,030.92x = 2,454,690,673.49
  5. Step 5: Solve for x
    x = 2,454,690,673.49/57,030.92
  6. Step 6: Final answer
    x = 43,041.40

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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.