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Finding the Fourth Proportional to 74,838.78, 112,168.90 and 34,803.72

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Solution

The fourth proportional to 74,838.78, 112,168.90 and 34,803.72 is: 52,164.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,838.78 : 112,168.90 = 34,803.72 : x
  2. Step 2: Convert to fraction form
    74,838.78/112,168.90 = 34,803.72/x
  3. Step 3: Cross multiply
    74,838.78x = 112,168.90 × 34,803.72
  4. Step 4: Simplify right side
    74,838.78x = 3,903,894,988.31
  5. Step 5: Solve for x
    x = 3,903,894,988.31/74,838.78
  6. Step 6: Final answer
    x = 52,164.07

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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.