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Finding the Fourth Proportional to 57,197.80, 85,893.90 and 42,423.40

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Solution

The fourth proportional to 57,197.80, 85,893.90 and 42,423.40 is: 63,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,197.80 : 85,893.90 = 42,423.40 : x
  2. Step 2: Convert to fraction form
    57,197.80/85,893.90 = 42,423.40/x
  3. Step 3: Cross multiply
    57,197.80x = 85,893.90 × 42,423.40
  4. Step 4: Simplify right side
    57,197.80x = 3,643,911,277.26
  5. Step 5: Solve for x
    x = 3,643,911,277.26/57,197.80
  6. Step 6: Final answer
    x = 63,707.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.