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Finding the Fourth Proportional to 40,688.70, 60,938.28 and 39,567.60

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Solution

The fourth proportional to 40,688.70, 60,938.28 and 39,567.60 is: 59,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,688.70 : 60,938.28 = 39,567.60 : x
  2. Step 2: Convert to fraction form
    40,688.70/60,938.28 = 39,567.60/x
  3. Step 3: Cross multiply
    40,688.70x = 60,938.28 × 39,567.60
  4. Step 4: Simplify right side
    40,688.70x = 2,411,181,487.73
  5. Step 5: Solve for x
    x = 2,411,181,487.73/40,688.70
  6. Step 6: Final answer
    x = 59,259.24

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1.5x scale

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.