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Finding the Fourth Proportional to 74,970.80, 112,468.80 and 22,385.60

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Solution

The fourth proportional to 74,970.80, 112,468.80 and 22,385.60 is: 33,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,970.80 : 112,468.80 = 22,385.60 : x
  2. Step 2: Convert to fraction form
    74,970.80/112,468.80 = 22,385.60/x
  3. Step 3: Cross multiply
    74,970.80x = 112,468.80 × 22,385.60
  4. Step 4: Simplify right side
    74,970.80x = 2,517,681,569.28
  5. Step 5: Solve for x
    x = 2,517,681,569.28/74,970.80
  6. Step 6: Final answer
    x = 33,582.16

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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.