Home / 77,312.12-115,869.08-67,275.16

Finding the Fourth Proportional to 77,312.12, 115,869.08 and 67,275.16

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Solution

The fourth proportional to 77,312.12, 115,869.08 and 67,275.16 is: 100,826.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,312.12 : 115,869.08 = 67,275.16 : x
  2. Step 2: Convert to fraction form
    77,312.12/115,869.08 = 67,275.16/x
  3. Step 3: Cross multiply
    77,312.12x = 115,869.08 × 67,275.16
  4. Step 4: Simplify right side
    77,312.12x = 7,795,110,178.89
  5. Step 5: Solve for x
    x = 7,795,110,178.89/77,312.12
  6. Step 6: Final answer
    x = 100,826.50

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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.