Home / 86,643,380.31-129,964,068.51-21,064,889.52

Finding the Fourth Proportional to 86,643,380.31, 129,964,068.51 and 21,064,889.52

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Solution

The fourth proportional to 86,643,380.31, 129,964,068.51 and 21,064,889.52 is: 31,597,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,380.31 : 129,964,068.51 = 21,064,889.52 : x
  2. Step 2: Convert to fraction form
    86,643,380.31/129,964,068.51 = 21,064,889.52/x
  3. Step 3: Cross multiply
    86,643,380.31x = 129,964,068.51 × 21,064,889.52
  4. Step 4: Simplify right side
    86,643,380.31x = 2,737,678,744,732,861
  5. Step 5: Solve for x
    x = 2,737,678,744,732,861/86,643,380.31
  6. Step 6: Final answer
    x = 31,597,090.68

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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.