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Finding the Fourth Proportional to 61,019.88, 84,163.95 and 56,000.31

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Solution

The fourth proportional to 61,019.88, 84,163.95 and 56,000.31 is: 77,240.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,019.88 : 84,163.95 = 56,000.31 : x
  2. Step 2: Convert to fraction form
    61,019.88/84,163.95 = 56,000.31/x
  3. Step 3: Cross multiply
    61,019.88x = 84,163.95 × 56,000.31
  4. Step 4: Simplify right side
    61,019.88x = 4,713,207,290.82
  5. Step 5: Solve for x
    x = 4,713,207,290.82/61,019.88
  6. Step 6: Final answer
    x = 77,240.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.