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Finding the Fourth Proportional to 64,386.79, 88,862.88 and 35,712.79

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Solution

The fourth proportional to 64,386.79, 88,862.88 and 35,712.79 is: 49,288.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,386.79 : 88,862.88 = 35,712.79 : x
  2. Step 2: Convert to fraction form
    64,386.79/88,862.88 = 35,712.79/x
  3. Step 3: Cross multiply
    64,386.79x = 88,862.88 × 35,712.79
  4. Step 4: Simplify right side
    64,386.79x = 3,173,541,372.24
  5. Step 5: Solve for x
    x = 3,173,541,372.24/64,386.79
  6. Step 6: Final answer
    x = 49,288.70

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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.