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Finding the Fourth Proportional to 39,907.40, 59,909.70 and 39,615.80

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Solution

The fourth proportional to 39,907.40, 59,909.70 and 39,615.80 is: 59,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,907.40 : 59,909.70 = 39,615.80 : x
  2. Step 2: Convert to fraction form
    39,907.40/59,909.70 = 39,615.80/x
  3. Step 3: Cross multiply
    39,907.40x = 59,909.70 × 39,615.80
  4. Step 4: Simplify right side
    39,907.40x = 2,373,370,693.26
  5. Step 5: Solve for x
    x = 2,373,370,693.26/39,907.40
  6. Step 6: Final answer
    x = 59,471.94

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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.