Home / 85,721.00-118,278.18-53,871.50

Finding the Fourth Proportional to 85,721.00, 118,278.18 and 53,871.50

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Solution

The fourth proportional to 85,721.00, 118,278.18 and 53,871.50 is: 74,332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,721.00 : 118,278.18 = 53,871.50 : x
  2. Step 2: Convert to fraction form
    85,721.00/118,278.18 = 53,871.50/x
  3. Step 3: Cross multiply
    85,721.00x = 118,278.18 × 53,871.50
  4. Step 4: Simplify right side
    85,721.00x = 6,371,823,269.57
  5. Step 5: Solve for x
    x = 6,371,823,269.57/85,721.00
  6. Step 6: Final answer
    x = 74,332.11

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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.