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Finding the Fourth Proportional to 60,666.60, 90,999.90 and 42,951.90

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Solution

The fourth proportional to 60,666.60, 90,999.90 and 42,951.90 is: 64,427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,666.60 : 90,999.90 = 42,951.90 : x
  2. Step 2: Convert to fraction form
    60,666.60/90,999.90 = 42,951.90/x
  3. Step 3: Cross multiply
    60,666.60x = 90,999.90 × 42,951.90
  4. Step 4: Simplify right side
    60,666.60x = 3,908,618,604.81
  5. Step 5: Solve for x
    x = 3,908,618,604.81/60,666.60
  6. Step 6: Final answer
    x = 64,427.85

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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.