Home / 49,921.94-74,881.47-12,985.94

Finding the Fourth Proportional to 49,921.94, 74,881.47 and 12,985.94

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Solution

The fourth proportional to 49,921.94, 74,881.47 and 12,985.94 is: 19,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,921.94 : 74,881.47 = 12,985.94 : x
  2. Step 2: Convert to fraction form
    49,921.94/74,881.47 = 12,985.94/x
  3. Step 3: Cross multiply
    49,921.94x = 74,881.47 × 12,985.94
  4. Step 4: Simplify right side
    49,921.94x = 972,406,276.53
  5. Step 5: Solve for x
    x = 972,406,276.53/49,921.94
  6. Step 6: Final answer
    x = 19,478.54

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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.