Home / 72,482,814.51-100,026,300.34-39,887,766.51

Finding the Fourth Proportional to 72,482,814.51, 100,026,300.34 and 39,887,766.51

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Solution

The fourth proportional to 72,482,814.51, 100,026,300.34 and 39,887,766.51 is: 55,045,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,482,814.51 : 100,026,300.34 = 39,887,766.51 : x
  2. Step 2: Convert to fraction form
    72,482,814.51/100,026,300.34 = 39,887,766.51/x
  3. Step 3: Cross multiply
    72,482,814.51x = 100,026,300.34 × 39,887,766.51
  4. Step 4: Simplify right side
    72,482,814.51x = 3,989,825,712,945,979.50
  5. Step 5: Solve for x
    x = 3,989,825,712,945,979.50/72,482,814.51
  6. Step 6: Final answer
    x = 55,045,126.76

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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.