Home / 66,420,681.20-99,673,012.20-39,126,921.20

Finding the Fourth Proportional to 66,420,681.20, 99,673,012.20 and 39,126,921.20

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Solution

The fourth proportional to 66,420,681.20, 99,673,012.20 and 39,126,921.20 is: 58,715,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420,681.20 : 99,673,012.20 = 39,126,921.20 : x
  2. Step 2: Convert to fraction form
    66,420,681.20/99,673,012.20 = 39,126,921.20/x
  3. Step 3: Cross multiply
    66,420,681.20x = 99,673,012.20 × 39,126,921.20
  4. Step 4: Simplify right side
    66,420,681.20x = 3,899,898,094,116,039
  5. Step 5: Solve for x
    x = 3,899,898,094,116,039/66,420,681.20
  6. Step 6: Final answer
    x = 58,715,117.40

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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.