Home / 76,727.34-115,159.59-39,312.90

Finding the Fourth Proportional to 76,727.34, 115,159.59 and 39,312.90

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Solution

The fourth proportional to 76,727.34, 115,159.59 and 39,312.90 is: 59,004.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,727.34 : 115,159.59 = 39,312.90 : x
  2. Step 2: Convert to fraction form
    76,727.34/115,159.59 = 39,312.90/x
  3. Step 3: Cross multiply
    76,727.34x = 115,159.59 × 39,312.90
  4. Step 4: Simplify right side
    76,727.34x = 4,527,257,445.71
  5. Step 5: Solve for x
    x = 4,527,257,445.71/76,727.34
  6. Step 6: Final answer
    x = 59,004.49

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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.