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Finding the Fourth Proportional to 88,990.40, 133,485.60 and 42,334.40

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Solution

The fourth proportional to 88,990.40, 133,485.60 and 42,334.40 is: 63,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,990.40 : 133,485.60 = 42,334.40 : x
  2. Step 2: Convert to fraction form
    88,990.40/133,485.60 = 42,334.40/x
  3. Step 3: Cross multiply
    88,990.40x = 133,485.60 × 42,334.40
  4. Step 4: Simplify right side
    88,990.40x = 5,651,032,784.64
  5. Step 5: Solve for x
    x = 5,651,032,784.64/88,990.40
  6. Step 6: Final answer
    x = 63,501.60

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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.