Home / 75,283.02-112,943.52-53,139.66

Finding the Fourth Proportional to 75,283.02, 112,943.52 and 53,139.66

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Solution

The fourth proportional to 75,283.02, 112,943.52 and 53,139.66 is: 79,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,283.02 : 112,943.52 = 53,139.66 : x
  2. Step 2: Convert to fraction form
    75,283.02/112,943.52 = 53,139.66/x
  3. Step 3: Cross multiply
    75,283.02x = 112,943.52 × 53,139.66
  4. Step 4: Simplify right side
    75,283.02x = 6,001,780,252.00
  5. Step 5: Solve for x
    x = 6,001,780,252.00/75,283.02
  6. Step 6: Final answer
    x = 79,722.89

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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.