Home / 86,690.24-129,981.04-34,038.56

Finding the Fourth Proportional to 86,690.24, 129,981.04 and 34,038.56

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Solution

The fourth proportional to 86,690.24, 129,981.04 and 34,038.56 is: 51,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,690.24 : 129,981.04 = 34,038.56 : x
  2. Step 2: Convert to fraction form
    86,690.24/129,981.04 = 34,038.56/x
  3. Step 3: Cross multiply
    86,690.24x = 129,981.04 × 34,038.56
  4. Step 4: Simplify right side
    86,690.24x = 4,424,367,428.90
  5. Step 5: Solve for x
    x = 4,424,367,428.90/86,690.24
  6. Step 6: Final answer
    x = 51,036.51

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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.