Home / 86,643,381.81-129,964,070.76-21,064,891.02

Finding the Fourth Proportional to 86,643,381.81, 129,964,070.76 and 21,064,891.02

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Solution

The fourth proportional to 86,643,381.81, 129,964,070.76 and 21,064,891.02 is: 31,597,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,381.81 : 129,964,070.76 = 21,064,891.02 : x
  2. Step 2: Convert to fraction form
    86,643,381.81/129,964,070.76 = 21,064,891.02/x
  3. Step 3: Cross multiply
    86,643,381.81x = 129,964,070.76 × 21,064,891.02
  4. Step 4: Simplify right side
    86,643,381.81x = 2,737,678,987,074,968.50
  5. Step 5: Solve for x
    x = 2,737,678,987,074,968.50/86,643,381.81
  6. Step 6: Final answer
    x = 31,597,092.93

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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.