Home / 74,905.40-112,487.70-39,913.40

Finding the Fourth Proportional to 74,905.40, 112,487.70 and 39,913.40

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Solution

The fourth proportional to 74,905.40, 112,487.70 and 39,913.40 is: 59,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,905.40 : 112,487.70 = 39,913.40 : x
  2. Step 2: Convert to fraction form
    74,905.40/112,487.70 = 39,913.40/x
  3. Step 3: Cross multiply
    74,905.40x = 112,487.70 × 39,913.40
  4. Step 4: Simplify right side
    74,905.40x = 4,489,766,565.18
  5. Step 5: Solve for x
    x = 4,489,766,565.18/74,905.40
  6. Step 6: Final answer
    x = 59,939.16

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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.