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Finding the Fourth Proportional to 61,607.31, 85,011.71 and 45,483.20

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Solution

The fourth proportional to 61,607.31, 85,011.71 and 45,483.20 is: 62,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,607.31 : 85,011.71 = 45,483.20 : x
  2. Step 2: Convert to fraction form
    61,607.31/85,011.71 = 45,483.20/x
  3. Step 3: Cross multiply
    61,607.31x = 85,011.71 × 45,483.20
  4. Step 4: Simplify right side
    61,607.31x = 3,866,604,608.27
  5. Step 5: Solve for x
    x = 3,866,604,608.27/61,607.31
  6. Step 6: Final answer
    x = 62,762.11

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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.