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Finding the Fourth Proportional to 49,948.98, 68,931.60 and 28,728.24

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Solution

The fourth proportional to 49,948.98, 68,931.60 and 28,728.24 is: 39,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,948.98 : 68,931.60 = 28,728.24 : x
  2. Step 2: Convert to fraction form
    49,948.98/68,931.60 = 28,728.24/x
  3. Step 3: Cross multiply
    49,948.98x = 68,931.60 × 28,728.24
  4. Step 4: Simplify right side
    49,948.98x = 1,980,283,548.38
  5. Step 5: Solve for x
    x = 1,980,283,548.38/49,948.98
  6. Step 6: Final answer
    x = 39,646.13

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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.