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Finding the Fourth Proportional to 51,459.72, 71,017.68 and 28,801.32

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Solution

The fourth proportional to 51,459.72, 71,017.68 and 28,801.32 is: 39,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,459.72 : 71,017.68 = 28,801.32 : x
  2. Step 2: Convert to fraction form
    51,459.72/71,017.68 = 28,801.32/x
  3. Step 3: Cross multiply
    51,459.72x = 71,017.68 × 28,801.32
  4. Step 4: Simplify right side
    51,459.72x = 2,045,402,927.34
  5. Step 5: Solve for x
    x = 2,045,402,927.34/51,459.72
  6. Step 6: Final answer
    x = 39,747.65

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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.