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Finding the Fourth Proportional to 61,812.40, 92,718.60 and 61,156.30

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Solution

The fourth proportional to 61,812.40, 92,718.60 and 61,156.30 is: 91,734.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,812.40 : 92,718.60 = 61,156.30 : x
  2. Step 2: Convert to fraction form
    61,812.40/92,718.60 = 61,156.30/x
  3. Step 3: Cross multiply
    61,812.40x = 92,718.60 × 61,156.30
  4. Step 4: Simplify right side
    61,812.40x = 5,670,326,517.18
  5. Step 5: Solve for x
    x = 5,670,326,517.18/61,812.40
  6. Step 6: Final answer
    x = 91,734.45

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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.