Home / 101,438,407-139,985,001.66-57,979,276.12

Finding the Fourth Proportional to 101,438,407, 139,985,001.66 and 57,979,276.12

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Solution

The fourth proportional to 101,438,407, 139,985,001.66 and 57,979,276.12 is: 80,011,401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,438,407 : 139,985,001.66 = 57,979,276.12 : x
  2. Step 2: Convert to fraction form
    101,438,407/139,985,001.66 = 57,979,276.12/x
  3. Step 3: Cross multiply
    101,438,407x = 139,985,001.66 × 57,979,276.12
  4. Step 4: Simplify right side
    101,438,407x = 8,116,229,063,903,798
  5. Step 5: Solve for x
    x = 8,116,229,063,903,798/101,438,407
  6. Step 6: Final answer
    x = 80,011,401.05

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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.