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Finding the Fourth Proportional to 64,459.78, 96,710.18 and 40,913.98

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Solution

The fourth proportional to 64,459.78, 96,710.18 and 40,913.98 is: 61,383.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,459.78 : 96,710.18 = 40,913.98 : x
  2. Step 2: Convert to fraction form
    64,459.78/96,710.18 = 40,913.98/x
  3. Step 3: Cross multiply
    64,459.78x = 96,710.18 × 40,913.98
  4. Step 4: Simplify right side
    64,459.78x = 3,956,798,370.32
  5. Step 5: Solve for x
    x = 3,956,798,370.32/64,459.78
  6. Step 6: Final answer
    x = 61,383.99

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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.