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Finding the Fourth Proportional to 61,342.80, 92,014.20 and 51,428.40

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Solution

The fourth proportional to 61,342.80, 92,014.20 and 51,428.40 is: 77,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,342.80 : 92,014.20 = 51,428.40 : x
  2. Step 2: Convert to fraction form
    61,342.80/92,014.20 = 51,428.40/x
  3. Step 3: Cross multiply
    61,342.80x = 92,014.20 × 51,428.40
  4. Step 4: Simplify right side
    61,342.80x = 4,732,143,083.28
  5. Step 5: Solve for x
    x = 4,732,143,083.28/61,342.80
  6. Step 6: Final answer
    x = 77,142.60

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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.