Home / 86,643,374-129,964,059.04-21,064,883.20

Finding the Fourth Proportional to 86,643,374, 129,964,059.04 and 21,064,883.20

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Solution

The fourth proportional to 86,643,374, 129,964,059.04 and 21,064,883.20 is: 31,597,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,374 : 129,964,059.04 = 21,064,883.20 : x
  2. Step 2: Convert to fraction form
    86,643,374/129,964,059.04 = 21,064,883.20/x
  3. Step 3: Cross multiply
    86,643,374x = 129,964,059.04 × 21,064,883.20
  4. Step 4: Simplify right side
    86,643,374x = 2,737,677,723,875,504
  5. Step 5: Solve for x
    x = 2,737,677,723,875,504/86,643,374
  6. Step 6: Final answer
    x = 31,597,081.20

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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.