Home / 61,319.81-91,945.02-21,320.39

Finding the Fourth Proportional to 61,319.81, 91,945.02 and 21,320.39

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Solution

The fourth proportional to 61,319.81, 91,945.02 and 21,320.39 is: 31,968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,319.81 : 91,945.02 = 21,320.39 : x
  2. Step 2: Convert to fraction form
    61,319.81/91,945.02 = 21,320.39/x
  3. Step 3: Cross multiply
    61,319.81x = 91,945.02 × 21,320.39
  4. Step 4: Simplify right side
    61,319.81x = 1,960,303,684.96
  5. Step 5: Solve for x
    x = 1,960,303,684.96/61,319.81
  6. Step 6: Final answer
    x = 31,968.52

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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.