Home / 77,031,236.52-115,545,688.38-18,739,463.40

Finding the Fourth Proportional to 77,031,236.52, 115,545,688.38 and 18,739,463.40

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Solution

The fourth proportional to 77,031,236.52, 115,545,688.38 and 18,739,463.40 is: 28,108,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,031,236.52 : 115,545,688.38 = 18,739,463.40 : x
  2. Step 2: Convert to fraction form
    77,031,236.52/115,545,688.38 = 18,739,463.40/x
  3. Step 3: Cross multiply
    77,031,236.52x = 115,545,688.38 × 18,739,463.40
  4. Step 4: Simplify right side
    77,031,236.52x = 2,165,264,198,424,815
  5. Step 5: Solve for x
    x = 2,165,264,198,424,815/77,031,236.52
  6. Step 6: Final answer
    x = 28,108,911.35

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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.