Home / 83,428.06-115,038.48-53,165.47

Finding the Fourth Proportional to 83,428.06, 115,038.48 and 53,165.47

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Solution

The fourth proportional to 83,428.06, 115,038.48 and 53,165.47 is: 73,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428.06 : 115,038.48 = 53,165.47 : x
  2. Step 2: Convert to fraction form
    83,428.06/115,038.48 = 53,165.47/x
  3. Step 3: Cross multiply
    83,428.06x = 115,038.48 × 53,165.47
  4. Step 4: Simplify right side
    83,428.06x = 6,116,074,857.29
  5. Step 5: Solve for x
    x = 6,116,074,857.29/83,428.06
  6. Step 6: Final answer
    x = 73,309.57

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1.5x scale

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.