Home / 86,643,327.61-129,963,989.50-21,064,836.81

Finding the Fourth Proportional to 86,643,327.61, 129,963,989.50 and 21,064,836.81

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Solution

The fourth proportional to 86,643,327.61, 129,963,989.50 and 21,064,836.81 is: 31,597,011.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,643,327.61 : 129,963,989.50 = 21,064,836.81 : x
  2. Step 2: Convert to fraction form
    86,643,327.61/129,963,989.50 = 21,064,836.81/x
  3. Step 3: Cross multiply
    86,643,327.61x = 129,963,989.50 × 21,064,836.81
  4. Step 4: Simplify right side
    86,643,327.61x = 2,737,670,230,428,756.50
  5. Step 5: Solve for x
    x = 2,737,670,230,428,756.50/86,643,327.61
  6. Step 6: Final answer
    x = 31,597,011.63

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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.