Home / 74,038.40-102,172.59-40,046.84

Finding the Fourth Proportional to 74,038.40, 102,172.59 and 40,046.84

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Solution

The fourth proportional to 74,038.40, 102,172.59 and 40,046.84 is: 55,264.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,038.40 : 102,172.59 = 40,046.84 : x
  2. Step 2: Convert to fraction form
    74,038.40/102,172.59 = 40,046.84/x
  3. Step 3: Cross multiply
    74,038.40x = 102,172.59 × 40,046.84
  4. Step 4: Simplify right side
    74,038.40x = 4,091,688,853.25
  5. Step 5: Solve for x
    x = 4,091,688,853.25/74,038.40
  6. Step 6: Final answer
    x = 55,264.42

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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.