Home / 76,891.51-115,281.91-47,248.10

Finding the Fourth Proportional to 76,891.51, 115,281.91 and 47,248.10

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Solution

The fourth proportional to 76,891.51, 115,281.91 and 47,248.10 is: 70,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,891.51 : 115,281.91 = 47,248.10 : x
  2. Step 2: Convert to fraction form
    76,891.51/115,281.91 = 47,248.10/x
  3. Step 3: Cross multiply
    76,891.51x = 115,281.91 × 47,248.10
  4. Step 4: Simplify right side
    76,891.51x = 5,446,851,211.87
  5. Step 5: Solve for x
    x = 5,446,851,211.87/76,891.51
  6. Step 6: Final answer
    x = 70,838.14

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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.