Home / 78,386.28-108,146.52-51,526.68

Finding the Fourth Proportional to 78,386.28, 108,146.52 and 51,526.68

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Solution

The fourth proportional to 78,386.28, 108,146.52 and 51,526.68 is: 71,089.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,386.28 : 108,146.52 = 51,526.68 : x
  2. Step 2: Convert to fraction form
    78,386.28/108,146.52 = 51,526.68/x
  3. Step 3: Cross multiply
    78,386.28x = 108,146.52 × 51,526.68
  4. Step 4: Simplify right side
    78,386.28x = 5,572,431,129.15
  5. Step 5: Solve for x
    x = 5,572,431,129.15/78,386.28
  6. Step 6: Final answer
    x = 71,089.37

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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.