Home / 86,501.28-129,689.64-53,152.44

Finding the Fourth Proportional to 86,501.28, 129,689.64 and 53,152.44

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Solution

The fourth proportional to 86,501.28, 129,689.64 and 53,152.44 is: 79,690.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,501.28 : 129,689.64 = 53,152.44 : x
  2. Step 2: Convert to fraction form
    86,501.28/129,689.64 = 53,152.44/x
  3. Step 3: Cross multiply
    86,501.28x = 129,689.64 × 53,152.44
  4. Step 4: Simplify right side
    86,501.28x = 6,893,320,322.39
  5. Step 5: Solve for x
    x = 6,893,320,322.39/86,501.28
  6. Step 6: Final answer
    x = 79,690.39

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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.