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Finding the Fourth Proportional to 74,599.95, 102,946.47 and 40,609.21

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Solution

The fourth proportional to 74,599.95, 102,946.47 and 40,609.21 is: 56,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,599.95 : 102,946.47 = 40,609.21 : x
  2. Step 2: Convert to fraction form
    74,599.95/102,946.47 = 40,609.21/x
  3. Step 3: Cross multiply
    74,599.95x = 102,946.47 × 40,609.21
  4. Step 4: Simplify right side
    74,599.95x = 4,180,574,818.99
  5. Step 5: Solve for x
    x = 4,180,574,818.99/74,599.95
  6. Step 6: Final answer
    x = 56,039.91

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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.