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Finding the Fourth Proportional to 61,903.55, 85,507.02 and 51,191.69

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Solution

The fourth proportional to 61,903.55, 85,507.02 and 51,191.69 is: 70,710.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,903.55 : 85,507.02 = 51,191.69 : x
  2. Step 2: Convert to fraction form
    61,903.55/85,507.02 = 51,191.69/x
  3. Step 3: Cross multiply
    61,903.55x = 85,507.02 × 51,191.69
  4. Step 4: Simplify right side
    61,903.55x = 4,377,248,433.13
  5. Step 5: Solve for x
    x = 4,377,248,433.13/61,903.55
  6. Step 6: Final answer
    x = 70,710.79

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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.