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Finding the Fourth Proportional to 74,085.50, 102,236.93 and 42,254.93

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Solution

The fourth proportional to 74,085.50, 102,236.93 and 42,254.93 is: 58,311.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,085.50 : 102,236.93 = 42,254.93 : x
  2. Step 2: Convert to fraction form
    74,085.50/102,236.93 = 42,254.93/x
  3. Step 3: Cross multiply
    74,085.50x = 102,236.93 × 42,254.93
  4. Step 4: Simplify right side
    74,085.50x = 4,320,013,915.02
  5. Step 5: Solve for x
    x = 4,320,013,915.02/74,085.50
  6. Step 6: Final answer
    x = 58,311.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.