Home / 51,285.61-76,875.86-19,687.15

Finding the Fourth Proportional to 51,285.61, 76,875.86 and 19,687.15

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Solution

The fourth proportional to 51,285.61, 76,875.86 and 19,687.15 is: 29,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,285.61 : 76,875.86 = 19,687.15 : x
  2. Step 2: Convert to fraction form
    51,285.61/76,875.86 = 19,687.15/x
  3. Step 3: Cross multiply
    51,285.61x = 76,875.86 × 19,687.15
  4. Step 4: Simplify right side
    51,285.61x = 1,513,466,488.76
  5. Step 5: Solve for x
    x = 1,513,466,488.76/51,285.61
  6. Step 6: Final answer
    x = 29,510.55

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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.