Home / 86,643,375-129,964,060.54-21,064,884.20

Finding the Fourth Proportional to 86,643,375, 129,964,060.54 and 21,064,884.20

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Solution

The fourth proportional to 86,643,375, 129,964,060.54 and 21,064,884.20 is: 31,597,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,375 : 129,964,060.54 = 21,064,884.20 : x
  2. Step 2: Convert to fraction form
    86,643,375/129,964,060.54 = 21,064,884.20/x
  3. Step 3: Cross multiply
    86,643,375x = 129,964,060.54 × 21,064,884.20
  4. Step 4: Simplify right side
    86,643,375x = 2,737,677,885,436,889.50
  5. Step 5: Solve for x
    x = 2,737,677,885,436,889.50/86,643,375
  6. Step 6: Final answer
    x = 31,597,082.70

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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.