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Finding the Fourth Proportional to 60,666.10, 90,999.15 and 42,951.40

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Solution

The fourth proportional to 60,666.10, 90,999.15 and 42,951.40 is: 64,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,666.10 : 90,999.15 = 42,951.40 : x
  2. Step 2: Convert to fraction form
    60,666.10/90,999.15 = 42,951.40/x
  3. Step 3: Cross multiply
    60,666.10x = 90,999.15 × 42,951.40
  4. Step 4: Simplify right side
    60,666.10x = 3,908,540,891.31
  5. Step 5: Solve for x
    x = 3,908,540,891.31/60,666.10
  6. Step 6: Final answer
    x = 64,427.10

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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.