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Finding the Fourth Proportional to 61,030.64, 91,421.22 and 45,253.46

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Solution

The fourth proportional to 61,030.64, 91,421.22 and 45,253.46 is: 67,787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,030.64 : 91,421.22 = 45,253.46 : x
  2. Step 2: Convert to fraction form
    61,030.64/91,421.22 = 45,253.46/x
  3. Step 3: Cross multiply
    61,030.64x = 91,421.22 × 45,253.46
  4. Step 4: Simplify right side
    61,030.64x = 4,137,126,522.42
  5. Step 5: Solve for x
    x = 4,137,126,522.42/61,030.64
  6. Step 6: Final answer
    x = 67,787.70

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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.