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Finding the Fourth Proportional to 61,921.46, 85,487.03 and 40,762.23

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Solution

The fourth proportional to 61,921.46, 85,487.03 and 40,762.23 is: 56,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,921.46 : 85,487.03 = 40,762.23 : x
  2. Step 2: Convert to fraction form
    61,921.46/85,487.03 = 40,762.23/x
  3. Step 3: Cross multiply
    61,921.46x = 85,487.03 × 40,762.23
  4. Step 4: Simplify right side
    61,921.46x = 3,484,641,775.07
  5. Step 5: Solve for x
    x = 3,484,641,775.07/61,921.46
  6. Step 6: Final answer
    x = 56,275.19

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1.5x scale

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.