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Finding the Fourth Proportional to 88,692.40, 133,038.60 and 77,287.60

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Solution

The fourth proportional to 88,692.40, 133,038.60 and 77,287.60 is: 115,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,692.40 : 133,038.60 = 77,287.60 : x
  2. Step 2: Convert to fraction form
    88,692.40/133,038.60 = 77,287.60/x
  3. Step 3: Cross multiply
    88,692.40x = 133,038.60 × 77,287.60
  4. Step 4: Simplify right side
    88,692.40x = 10,282,234,101.36
  5. Step 5: Solve for x
    x = 10,282,234,101.36/88,692.40
  6. Step 6: Final answer
    x = 115,931.40

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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.