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Finding the Fourth Proportional to 61,392.76, 92,090.40 and 19,271.98

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Solution

The fourth proportional to 61,392.76, 92,090.40 and 19,271.98 is: 28,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,392.76 : 92,090.40 = 19,271.98 : x
  2. Step 2: Convert to fraction form
    61,392.76/92,090.40 = 19,271.98/x
  3. Step 3: Cross multiply
    61,392.76x = 92,090.40 × 19,271.98
  4. Step 4: Simplify right side
    61,392.76x = 1,774,764,346.99
  5. Step 5: Solve for x
    x = 1,774,764,346.99/61,392.76
  6. Step 6: Final answer
    x = 28,908.37

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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.