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Finding the Fourth Proportional to 65,848.44, 90,688.50 and 56,893.08

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Solution

The fourth proportional to 65,848.44, 90,688.50 and 56,893.08 is: 78,354.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,848.44 : 90,688.50 = 56,893.08 : x
  2. Step 2: Convert to fraction form
    65,848.44/90,688.50 = 56,893.08/x
  3. Step 3: Cross multiply
    65,848.44x = 90,688.50 × 56,893.08
  4. Step 4: Simplify right side
    65,848.44x = 5,159,548,085.58
  5. Step 5: Solve for x
    x = 5,159,548,085.58/65,848.44
  6. Step 6: Final answer
    x = 78,354.90

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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.