Home / 77,312.86-115,897.93-53,631.58

Finding the Fourth Proportional to 77,312.86, 115,897.93 and 53,631.58

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Solution

The fourth proportional to 77,312.86, 115,897.93 and 53,631.58 is: 80,397.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,312.86 : 115,897.93 = 53,631.58 : x
  2. Step 2: Convert to fraction form
    77,312.86/115,897.93 = 53,631.58/x
  3. Step 3: Cross multiply
    77,312.86x = 115,897.93 × 53,631.58
  4. Step 4: Simplify right side
    77,312.86x = 6,215,789,104.63
  5. Step 5: Solve for x
    x = 6,215,789,104.63/77,312.86
  6. Step 6: Final answer
    x = 80,397.87

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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.