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Finding the Fourth Proportional to 77,014.88, 115,259.48 and 64,548.98

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Solution

The fourth proportional to 77,014.88, 115,259.48 and 64,548.98 is: 96,603.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,014.88 : 115,259.48 = 64,548.98 : x
  2. Step 2: Convert to fraction form
    77,014.88/115,259.48 = 64,548.98/x
  3. Step 3: Cross multiply
    77,014.88x = 115,259.48 × 64,548.98
  4. Step 4: Simplify right side
    77,014.88x = 7,439,881,546.59
  5. Step 5: Solve for x
    x = 7,439,881,546.59/77,014.88
  6. Step 6: Final answer
    x = 96,603.17

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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.