Home / 90,663,714.45-125,116,349.65-51,507,639.80

Finding the Fourth Proportional to 90,663,714.45, 125,116,349.65 and 51,507,639.80

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Solution

The fourth proportional to 90,663,714.45, 125,116,349.65 and 51,507,639.80 is: 71,080,783.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,663,714.45 : 125,116,349.65 = 51,507,639.80 : x
  2. Step 2: Convert to fraction form
    90,663,714.45/125,116,349.65 = 51,507,639.80/x
  3. Step 3: Cross multiply
    90,663,714.45x = 125,116,349.65 × 51,507,639.80
  4. Step 4: Simplify right side
    90,663,714.45x = 6,444,447,870,605,517
  5. Step 5: Solve for x
    x = 6,444,447,870,605,517/90,663,714.45
  6. Step 6: Final answer
    x = 71,080,783.64

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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.