Home / 74,348.21-102,602.35-40,356.61

Finding the Fourth Proportional to 74,348.21, 102,602.35 and 40,356.61

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Solution

The fourth proportional to 74,348.21, 102,602.35 and 40,356.61 is: 55,693.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,348.21 : 102,602.35 = 40,356.61 : x
  2. Step 2: Convert to fraction form
    74,348.21/102,602.35 = 40,356.61/x
  3. Step 3: Cross multiply
    74,348.21x = 102,602.35 × 40,356.61
  4. Step 4: Simplify right side
    74,348.21x = 4,140,683,024.03
  5. Step 5: Solve for x
    x = 4,140,683,024.03/74,348.21
  6. Step 6: Final answer
    x = 55,693.11

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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.