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Finding the Fourth Proportional to 74,886.40, 112,329.60 and 19,482.40

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Solution

The fourth proportional to 74,886.40, 112,329.60 and 19,482.40 is: 29,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,886.40 : 112,329.60 = 19,482.40 : x
  2. Step 2: Convert to fraction form
    74,886.40/112,329.60 = 19,482.40/x
  3. Step 3: Cross multiply
    74,886.40x = 112,329.60 × 19,482.40
  4. Step 4: Simplify right side
    74,886.40x = 2,188,450,199.04
  5. Step 5: Solve for x
    x = 2,188,450,199.04/74,886.40
  6. Step 6: Final answer
    x = 29,223.60

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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.