Home / 100,039,511.48-138,080,479.02-56,604,641.72

Finding the Fourth Proportional to 100,039,511.48, 138,080,479.02 and 56,604,641.72

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Solution

The fourth proportional to 100,039,511.48, 138,080,479.02 and 56,604,641.72 is: 78,129,090.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039,511.48 : 138,080,479.02 = 56,604,641.72 : x
  2. Step 2: Convert to fraction form
    100,039,511.48/138,080,479.02 = 56,604,641.72/x
  3. Step 3: Cross multiply
    100,039,511.48x = 138,080,479.02 × 56,604,641.72
  4. Step 4: Simplify right side
    100,039,511.48x = 7,815,996,043,453,077
  5. Step 5: Solve for x
    x = 7,815,996,043,453,077/100,039,511.48
  6. Step 6: Final answer
    x = 78,129,090.47

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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.