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Finding the Fourth Proportional to 114,638.64, 171,955.08 and 39,812.40

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Solution

The fourth proportional to 114,638.64, 171,955.08 and 39,812.40 is: 59,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,638.64 : 171,955.08 = 39,812.40 : x
  2. Step 2: Convert to fraction form
    114,638.64/171,955.08 = 39,812.40/x
  3. Step 3: Cross multiply
    114,638.64x = 171,955.08 × 39,812.40
  4. Step 4: Simplify right side
    114,638.64x = 6,845,944,426.99
  5. Step 5: Solve for x
    x = 6,845,944,426.99/114,638.64
  6. Step 6: Final answer
    x = 59,717.60

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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.