Home / 90,904,108.72-125,448,053.13-51,212,115.69

Finding the Fourth Proportional to 90,904,108.72, 125,448,053.13 and 51,212,115.69

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Solution

The fourth proportional to 90,904,108.72, 125,448,053.13 and 51,212,115.69 is: 70,672,935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,904,108.72 : 125,448,053.13 = 51,212,115.69 : x
  2. Step 2: Convert to fraction form
    90,904,108.72/125,448,053.13 = 51,212,115.69/x
  3. Step 3: Cross multiply
    90,904,108.72x = 125,448,053.13 × 51,212,115.69
  4. Step 4: Simplify right side
    90,904,108.72x = 6,424,460,209,700,442
  5. Step 5: Solve for x
    x = 6,424,460,209,700,442/90,904,108.72
  6. Step 6: Final answer
    x = 70,672,935.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.