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Finding the Fourth Proportional to 57,238.51, 85,870.85 and 19,798.55

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Solution

The fourth proportional to 57,238.51, 85,870.85 and 19,798.55 is: 29,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,238.51 : 85,870.85 = 19,798.55 : x
  2. Step 2: Convert to fraction form
    57,238.51/85,870.85 = 19,798.55/x
  3. Step 3: Cross multiply
    57,238.51x = 85,870.85 × 19,798.55
  4. Step 4: Simplify right side
    57,238.51x = 1,700,118,218.27
  5. Step 5: Solve for x
    x = 1,700,118,218.27/57,238.51
  6. Step 6: Final answer
    x = 29,702.35

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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.