Home / 42,708.36-64,062.60-13,126.02

Finding the Fourth Proportional to 42,708.36, 64,062.60 and 13,126.02

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Solution

The fourth proportional to 42,708.36, 64,062.60 and 13,126.02 is: 19,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,708.36 : 64,062.60 = 13,126.02 : x
  2. Step 2: Convert to fraction form
    42,708.36/64,062.60 = 13,126.02/x
  3. Step 3: Cross multiply
    42,708.36x = 64,062.60 × 13,126.02
  4. Step 4: Simplify right side
    42,708.36x = 840,886,968.85
  5. Step 5: Solve for x
    x = 840,886,968.85/42,708.36
  6. Step 6: Final answer
    x = 19,689.05

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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.