Home / 86,345.75-129,512.68-53,070.95

Finding the Fourth Proportional to 86,345.75, 129,512.68 and 53,070.95

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Solution

The fourth proportional to 86,345.75, 129,512.68 and 53,070.95 is: 79,602.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,345.75 : 129,512.68 = 53,070.95 : x
  2. Step 2: Convert to fraction form
    86,345.75/129,512.68 = 53,070.95/x
  3. Step 3: Cross multiply
    86,345.75x = 129,512.68 × 53,070.95
  4. Step 4: Simplify right side
    86,345.75x = 6,873,360,964.65
  5. Step 5: Solve for x
    x = 6,873,360,964.65/86,345.75
  6. Step 6: Final answer
    x = 79,602.77

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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.